--- product_id: 161121162 title: "K'NEX - 40 Model Building Set‚ 141 Pieces, STEM Toy, Engineering Play, Creative Construction‚ Ages 5+" brand: "k'nex" price: "350.85 DT" currency: TND in_stock: true reviews_count: 13 category: "K'nex" url: https://www.desertcart.tn/products/161121162-knex-40-model-building-set-141-pieces-stem-toy-engineering store_origin: TN region: Tunisia --- # Real moving parts for dynamic builds 40 step-by-step model guides 141 versatile snap-fit pieces K'NEX - 40 Model Building Set‚ 141 Pieces, STEM Toy, Engineering Play, Creative Construction‚ Ages 5+ **Brand:** k'nex **Price:** 350.85 DT **Availability:** ✅ In Stock ## Summary > 🚀 Build, move, and innovate—where STEM meets playtime magic! ## Quick Answers - **What is this?** K'NEX - 40 Model Building Set‚ 141 Pieces, STEM Toy, Engineering Play, Creative Construction‚ Ages 5+ by k'nex - **How much does it cost?** 350.85 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/161121162-knex-40-model-building-set-141-pieces-stem-toy-engineering) ## Best For - k'nex enthusiasts ## Why This Product - Trusted k'nex brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Master STEM Skills Early:** Build 40 unique models that boost spatial reasoning, motor skills, and engineering know-how. - • **Interactive, Moving Models:** Create cars, airplanes, and more with parts that actually move—play meets real-world physics. - • **Portable & Organized Storage:** Sturdy suitcase-style box with handle keeps your child’s creations and parts neatly stored and ready to go. - • **Unleash Limitless Creativity:** 141 precision-engineered pieces snap together for endless design possibilities. - • **Kid-Friendly, Frustration-Free Design:** Innovative easy-build rods and panels make complex 3D creations accessible for ages 5+. ## Overview The K'NEX 40 Model Building Set includes 141 colorful, snap-fit pieces and an instruction booklet to build 40 unique models. Designed for kids ages 5 and up, it promotes STEM learning by enhancing fine motor skills, spatial reasoning, and creativity. Featuring real moving parts and a portable storage case, this set offers a frustration-free, hands-on engineering experience that grows with your child’s imagination. ## Description Building with K'NEX is easier than ever, with the beginner 40 Model building set! Featuring all new easy-build parts that allow children ages 5 and up to have a frustration-free building experience. The new parts – a barbell shaped rod that easily sandwiches between 2 connectors, and a flat panel piece that provides structural support – were specifically designed to address the needs of younger builders, who can easily build 2 flat shapes and then connect them together into a 3-D creation! Plus, newly designed wheels pop right on – they'll be on the go in no time! This set contains 141 parts and easy-to-follow, step-by-step building instructions and ideas for 40 different models. Your little builder can also use the parts to design and create from their own imagination! Packaged in a sturdy suitcase-style box with a handle for easy clean-up and portable storage. Building with K'NEX supports a child's developmental growth and puts them on a path towards a better understanding of STEM subjects. As they fit the pieces together, they're developing spatial awareness and honing their fine motor and dexterity skills. Give your child the gift of creativity with K'NEX and think outside the blocks! Review: Great for young kids! - I just bought this as a birthday present for my friend’s 4 year old boy. He absolutely loves this K’nex set and even managed to build the little car in the picture all by himself! I’d say this gift was a win! These kits a great for kids and it promotes creativity and building skills. I remember playing with these when I was a kid too and I loved them! I would highly recommend these K’nex kits! Review: Great product - My 8year old nephew loves this thing parents are going to buy more haha ## Features - 141 PIECES – This set comes with 141 classic and micro K'NEX parts and pieces that "click" together, allowing kids to create anything that they can imagine. It includes rods and connectors that are attached to one another in different ways, allowing kids to unleash their creativity and skills in designing a variety of shapes, figures, and models. The snap-fit pieces stick together securely and can be easily reassembled into other creations. - BUILD & REBUILD – Includes an instruction booklet that shows builders how to create 40 unique models with its step-by-step guidelines like a car, a skyscraper, an airplane, a rowboat, and so much more! This toy is ideal for kids ages 7 and above, allowing them to create anything that their minds can come up with. Watch your kids’ imaginations grow through the sheer amount of models they can make with the K’NEX 40 Model Building Set. - STEAM LEARNING FUN – Building with K'NEX helps strengthen fine motor skills, manual dexterity, and spatial relations. Both exciting and educational, K'NEX can help children learn basic principles of physics, engineering and architecture. - REAL MOVING PARTS – Unlike other building toys, K’NEX lets builders create different models that actually move. This building set allows them to make interactive toys and figures like cars, airplanes, and animals. Constructing your own parasail, windmill, or robot isn’t just a dream when you have this building set! - CONVENIENT STORAGE – storing small plastic toy parts is easy with the sturdy suitcase-style box with a handle for easy clean-up and portable storage. Keep everything together, including loose parts and partially built models. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07PQTDGWR | | Additional Features | Portable | | Age Range Description | 5-12 years | | Best Sellers Rank | #42,549 in Toys & Games ( See Top 100 in Toys & Games ) #1,339 in Toy Building Sets | | Brand Name | K'NEX | | Color | Multicolor | | Customer Package Type | Standard Packaging | | Customer Reviews | 4.7 out of 5 stars 2,445 Reviews | | Educational Objective | Motor Skills, Spatial Reasoning, STEM | | Global Trade Identification Number | 00744476152107 | | Included Components | 141 K'NEX Parts and Pieces, Instruction Booklet | | Item Dimensions | 12 x 3.5 x 8 inches | | Item Type Name | building toy | | Item Weight | 10.9 ounces | | Manufacturer | K'NEX | | Manufacturer Maximum Age (MONTHS) | 96 | | Manufacturer Minimum Age (MONTHS) | 60 | | Manufacturer Part Number | 15210 | | Manufacturer Warranty Description | Lifetime Warranty Against Manufacturer'S Defects | | Material Type | Plastic | | Model Name | Beginner 40 Model | | Model Number | 15210 | | Model Year | 2020 | | Number of Packs | 1 | | Number of Pieces | 141 | | Number of Players | 2 + | | Operation Mode | Manual | | Power Source | Manual | | Set Name | Beginner 40 Model | | Size | Mediano | | Sub Brand | 29.99 | | Subject Character | Auto | | Target Audience | Boys | | Theme | Creative Engineering | | Toy Building Block Type | Interlocking Toy Building Block | | UPC | 744476152107 887961266627 | | Unit Count | 24 Count | ## Images ![K'NEX - 40 Model Building Set‚ 141 Pieces, STEM Toy, Engineering Play, Creative Construction‚ Ages 5+ - Image 1](https://m.media-amazon.com/images/I/81XnEovqNyL.jpg) ## Available Options This product comes in different **Pattern, Style** options. ## Questions & Answers **Q: Can these pieces attach to other sets?** A: Kid K'NEX parts will work with parts from other Kid K'NEX sets. They will not work with the smaller parts in regular "K'NEX" sets so be sure to look for sets that say "Kid K'NEX". **Q: Can these be use with regular size knex?** A: The Kid K'NEX Oodles of Pals Building Set parts are larger, softer plastic parts for small hands to easily manipulate and they snap together like regular K'NEX but they are not compatible. **Q: What’s hat are the pieces and how many of each come with this set? are the pieces that come in this set?** A: Hi there, thank you for your inquiry - there are 116 pieces included with this kit. To best see the custom parts including 2 different types of eyes and a cute animal face, please visit our Basic Fun website (unfortunately we are not permitted to post the URL here), go to "Support" - "instructions" - "Knex" and type in the style # of this kit which is 85701 - you will see the full instructions including the pieces and part count. Please let us know if you need anything else & happy building! - Your Friends at Basic Fun **Q: How many eyes come in this set?** A: It comes with one pair that are stuck together that are blue and two individual purple eyes. Hope that helps. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great for young kids! *by R***N on July 27, 2021* I just bought this as a birthday present for my friend’s 4 year old boy. He absolutely loves this K’nex set and even managed to build the little car in the picture all by himself! I’d say this gift was a win! These kits a great for kids and it promotes creativity and building skills. I remember playing with these when I was a kid too and I loved them! I would highly recommend these K’nex kits! ### ⭐⭐⭐⭐⭐ Great product *by A***W on February 28, 2026* My 8year old nephew loves this thing parents are going to buy more haha ### ⭐⭐⭐⭐⭐ Tons of fun!! *by T***O on April 11, 2024* This brought me back to my child hood. It's fun for all ages. Has easy to read instructions. The quality of the pieces are strong and sturdy. The appearance of the the piece are bight in colors. ## Frequently Bought Together - K'NEX - 40 Model Building Set‚ 141 Pieces, STEM Toy, Engineering Play, Creative Construction‚ Ages 5+ - K'NEX - Adventure Wheels Building Set - 480 Pieces‚ STEM Building, Creative Construction Set‚ Ages 7+ - K'NEX - Click & Construct Value Building Set - 522 Pieces, STEM Building, Creative Play Set‚ Ages 7+ --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/161121162-knex-40-model-building-set-141-pieces-stem-toy-engineering](https://www.desertcart.tn/products/161121162-knex-40-model-building-set-141-pieces-stem-toy-engineering) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-08-21*