The core bits boxed set includes 12pcs totally: 9pcs drill bits diameter (5/6/6/8/20/25/28/32/35MM and 1pc 6mm(1/4") Carbide Drill bit and 1pc chamfer bits diameter 30mm(1-3/16") and 1pc 10MM(3/8") milling bits The drilling bits sets are multifunction used for Dry/wet drilling milling beveling porcelain tile, granite, marble, brick and all similar material.The boxed set can solve most of the daily needs G35/40 high quality diamond grain and vacuum brazed technology make the hole smooth and clean, and can achieve excellent surface effect,drilling faster,durable and sturdy Special U-Shape Design:Chip flutes at both sides of drill bit for fast removing stone chips and improve drilling efficiency Attention: The drill bit is usually suitable for drill machine. Before starting drilling,please confirm your drill's RPM,at least over 2000 RPM. Faster the RPM,Longer the drill bit's Working Life

Application :

Dry/wet drilling for porcelain tile marble stone masonry brick granite and all normal stones

Feature:

1. It is processed by cutting-edge high-end vacuum brazing process;

2. The fine particles, through fine drilling, make the edge of the hole smooth and clean, and can achieve excellent surface effect;

3. High-quality diamond particles provide better performance and longer working life for the product;；

4. Both can dry or wet use.