---
product_id: 18364793
title: "5/16\" Armeg PTC Carbide Porcelain Drill Bit"
brand: "gundlach"
price: "€ 116.86"
currency: EUR
in_stock: true
reviews_count: 8
url: https://www.desertcart.fi/products/18364793-5-16-armeg-ptc-carbide-porcelain-drill-bit
store_origin: FI
region: Finland
---

# 5/16" Armeg PTC Carbide Porcelain Drill Bit

**Brand:** gundlach
**Price:** € 116.86
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** 5/16" Armeg PTC Carbide Porcelain Drill Bit by gundlach
- **How much does it cost?** € 116.86 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/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!

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**Shop now:** [https://www.desertcart.fi/products/18364793-5-16-armeg-ptc-carbide-porcelain-drill-bit](https://www.desertcart.fi/products/18364793-5-16-armeg-ptc-carbide-porcelain-drill-bit)

---

*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-03-01*