--- product_id: 129278269 title: "UCTOP Store 4Pcs Round Groove Nylon Pulley U Groove Track Roller Bearing (6 * 21 * 7mm (4 Pcs))" brand: "monliya" price: "154.56 DT" currency: TND in_stock: true reviews_count: 9 category: "Mon Liya" url: https://www.desertcart.tn/products/129278269-uctop-store-4pcs-round-groove-nylon-pulley-u-groove-track store_origin: TN region: Tunisia --- # Smooth deep groove ball bearing Precision 6x21x7mm size Durable nylon for versatile use UCTOP Store 4Pcs Round Groove Nylon Pulley U Groove Track Roller Bearing (6 * 21 * 7mm (4 Pcs)) **Brand:** monliya **Price:** 154.56 DT **Availability:** ✅ In Stock ## Summary > 🔧 Glide into effortless efficiency with UCTOP’s precision pulleys! ## Quick Answers - **What is this?** UCTOP Store 4Pcs Round Groove Nylon Pulley U Groove Track Roller Bearing (6 * 21 * 7mm (4 Pcs)) by monliya - **How much does it cost?** 154.56 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/129278269-uctop-store-4pcs-round-groove-nylon-pulley-u-groove-track) ## Best For - monliya enthusiasts ## Why This Product - Trusted monliya brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Ready for Action:** Pack of 4 pulleys means you’re equipped to tackle multiple projects or replacements instantly. - • **Compact Yet Mighty:** Precisely sized at 6mm ID x 21mm OD x 7mm thickness, fitting perfectly into a variety of hardware applications. - • **Lightweight Durability:** Crafted from high-quality nylon, these pulleys offer long-lasting wear without adding bulk. - • **Versatile Compatibility:** Ideal for furniture, sliding doors, drawers, and shower pulleys—upgrade your space with ease. - • **Engineered for Seamless Motion:** Deep groove ball bearings ensure ultra-smooth sliding and minimal friction for premium performance. ## Overview The UCTOP Store 4Pcs Round Groove Nylon Pulley set features 6x21x7mm deep groove ball bearings made from durable nylon, designed for smooth, flexible sliding in furniture hardware, sliding doors, drawers, and more. ISO 1206 certified and grease-compatible, these lightweight pulleys deliver reliable performance across multiple applications. ## Description Specification: 100% brand new and high quality. Deep groove ball bearings fashionable slide flexible compression wear. Suitable for furniture hardware accessories mobile doors glass sliding doors aluminum doors and windows shower pulleys and drawers etc. Product Size: 6mm(ID)*21mm(OD)*7mm(Thickness) Package Includes: 4 Pcs U Groove Pulley Ball Review: Exactly as described good value for money. Could be used for many applications. - Great little item. Used it for a guide wheel for a jig intended for grinding a straight edge. Arrived promptly. Many thanks. Review: Fast delivery - Very good ## Features - 100% brand new and high quality. - Deep groove ball bearings fashionable slide flexible compression wear. - Suitable for furniture hardware accessories mobile doors glass sliding doors aluminum doors and windows shower pulleys and drawers etc - Product Size: 6mm(ID)*21mm(OD)*7mm(Thickness) ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07KR5ZQ1X | | Bearing Number | 1247 | | Bearing Type | Ball Bearing | | Bearing number | 1247 | | Brand | MonLiya | | Compatible Lubricant | Grease | | Customer Reviews | 4.2 out of 5 stars 109 Reviews | | Item Thickness | 7 Millimetres | | Item Weight | 0.02 Kilograms | | Item thickness | 7 Millimetres | | Item weight | 0.02 Kilograms | | Manufacturer | UCTOP STORE | | Manufacturer Part Number | 1247 | | Material | Nylon | | Model Number | 1247 | | Specification Met | ISO 1206 | | Specification met | ISO 1206 | ## Product Details - **Brand:** MonLiya - **Material:** Nylon - **Item weight:** 0.02 Kilograms - **Item thickness:** 7 Millimetres - **Bearing type:** Ball Bearing ## Images ![UCTOP Store 4Pcs Round Groove Nylon Pulley U Groove Track Roller Bearing (6 * 21 * 7mm (4 Pcs)) - Image 1](https://m.media-amazon.com/images/I/61irDuw9nyL.jpg) ![UCTOP Store 4Pcs Round Groove Nylon Pulley U Groove Track Roller Bearing (6 * 21 * 7mm (4 Pcs)) - Image 2](https://m.media-amazon.com/images/I/3197tbluG8L.jpg) ![UCTOP Store 4Pcs Round Groove Nylon Pulley U Groove Track Roller Bearing (6 * 21 * 7mm (4 Pcs)) - Image 3](https://m.media-amazon.com/images/I/31Gckl9lOrL.jpg) ## Questions & Answers **Q: Are these v or u groove? some pics suggest v groove. also how wide is the groove?** A: They look like U type. The ones I bought were U type ## Customer Reviews ### ⭐⭐⭐⭐⭐ Exactly as described good value for money. Could be used for many applications. *by K***L on 22 February 2021* Great little item. Used it for a guide wheel for a jig intended for grinding a straight edge. Arrived promptly. Many thanks. ### ⭐⭐⭐⭐⭐ Fast delivery *by I***N on 8 January 2020* Very good ### ⭐⭐⭐ Good item *by D***G on 7 April 2020* Done the job. Nothing special but not bad --- ## 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/129278269-uctop-store-4pcs-round-groove-nylon-pulley-u-groove-track](https://www.desertcart.tn/products/129278269-uctop-store-4pcs-round-groove-nylon-pulley-u-groove-track) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-10-11*