--- product_id: 18364793 title: "5/16\" Armeg PTC Carbide Porcelain Drill Bit" brand: "gundlach" price: "386.62 DT" currency: TND in_stock: true reviews_count: 8 url: https://www.desertcart.tn/products/18364793-5-16-armeg-ptc-carbide-porcelain-drill-bit store_origin: TN region: Tunisia --- # 5/16" Armeg PTC Carbide Porcelain Drill Bit **Brand:** gundlach **Price:** 386.62 DT **Availability:** ✅ In Stock ## Quick Answers - **What is this?** 5/16" Armeg PTC Carbide Porcelain Drill Bit by gundlach - **How much does it cost?** 386.62 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/18364793-5-16-armeg-ptc-carbide-porcelain-drill-bit) ## Best For - gundlach enthusiasts ## Why This Product - Trusted gundlach brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Description 5/16" Armeg PTC Carbide Porcelain Drill Bit ## Features - 8.0mm - 5/16" PTC Drill CTCP8.0 - Easy Start up and rapid penetration in Porcelain tile. - Special carbide tip ensures accurate holes and virtually eliminates drill bit wander. - Max operating speed, is between 700 and 900 Rpm. - Spray water on the PTC bit when drilling, to keep the bit cool and sharp. - ›See more product details ## Images ![5/16" Armeg PTC Carbide Porcelain Drill Bit - Image 1](https://m.media-amazon.com/images/I/31oO-Z4O7TL.jpg) ## Customer Reviews ### ⭐⭐⭐ "Fast" is relative *by B***A on Reviewed in the United States on October 6, 2016* It works, but it's not what I would call fast. I bought this bit after realizing the $19 "glass and tile" bit from the local hardware store wasn't going to work at all. Used it in my variable speed Makita cordless to drill mounting holes for a towel shelf and curved shower curtain rod -- 8 holes total -- in 3/8" porcelain tile Two of us working together could drill one hole in about 30 minutes. I held the drill applying as much pressure as I could. My partner sprayed water into the hole from a water bottle continuously. We worked in 3-minute intervals with short breaks to shake it out between intervals. The first hole took 22 minutes of actual drilling time (not counting breaks). The second: just about the same -- 22 minutes. At this point we decided to take care of other business and come back after lunch for hole #3 and leave #4 for after dinner. #3 took 23 minutes. #4: 28. I can't tell if the bit is getting dull or I'm getting weaker.I used the slower range on my drill with the trigger depressed all the way. I did *not* use hammer mode in accordance with instructions that came with the bit. Shelf looks great. Tomorrow, the curtain rod... ### ⭐⭐⭐⭐⭐ Best I've Found! *by T***E on Reviewed in the United States on April 21, 2017* This guy worked great for porcelain! So after trying a diamond bit, I was left frustrated and wondering if I am going to be able to drill 12 holes to install 2 grab bars in a shower. Luckily I came across this gem. Here are my impressions:First, it was very easy to start the hole exactly where I wanted, even when I didn't use a punch to mark the spot, no wandering! Second, I was worried about keeping the bit cool (and sharp!) as I had 12 holes to drill in pretty thick porcelain tiles and I needed this bit to last. So I stopped by the hardware store and bought a 1 gallon garden sprayer for 10 bucks, filled it with ice water, pumped it up and sprayed the drill bit the entire time I was drilling my holes. I set my 18V drill to low speed and the hammer-drill setting and applied steady pressure. This bit drilled like a champ. It did all 12 holes in about 45 minutes time along with mounting the anchors and installing the 2 safety bars. I did notice it was a little slower/needed more pressure towards the last hole or 2, but I am guessing I can get 40 holes out of this bit with the method I described. ### ⭐⭐⭐⭐⭐ Great drill bit *by A***C on Reviewed in the United States on September 7, 2019* Wish I found this drill bit when I first needed to drill holes in ceramic tiles. This drill bit is pricey but very effective. Much better than the three other drill bits I tried first. It started the hole where I wanted it and didn't dance all over the tile. It was quicker. All around a great product worth the price! --- ## 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/18364793-5-16-armeg-ptc-carbide-porcelain-drill-bit](https://www.desertcart.tn/products/18364793-5-16-armeg-ptc-carbide-porcelain-drill-bit) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-06-01*