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 Multidrill Water Swivel Kit  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.