Diamond Core Drill Bits

Our drill bits are what make the Gunther Drilling System the World's best tool for small diameter core drilling in Stone, Ceramic, and Glass. Here's Why:

#1 - We make everything ourselves in Idar-Oberstein, Germany. 

#2 - Our core drill bits are sintered with diamond using a unique manufacturing process. 

#3 - A competent driller can expect 500 to 800 holes per drill bit - these drill bits last.

#4 - Fewer clogged drill bits with the Core Ejector System

#5 - No blowout - stop chipping the backside of the hole with the Gunther Alignment System

Our Bits For Our system - Our diamond core drill bits are made specifically for the Gunther Drilling Systems. We do not recommend using our drill bits in other drilling systems. Check out our Multi-Drill Starter Kit adapter system if you want to use your drill press.

Stock Size Drill Bits - Sizes we keep on hand and can typically ship within two days of your order. These are available in half-millimeter increments from 0.7mm to 8.0mm (e.g., 1.0mm, 1.5mm, 2.0mm, 2.5mm,….8.0mm). 

Custom Size Drill Bits - We are happy to make a custom drill bit for you if you need a unique size. For all custom orders, please Contact Us