Twister Vacuum Brazed Diamond Bur / Etching Bit

This Twister vaccum brazed diamond bit is designed for drilling and etching with the most efficiency. With the spiral diamond design, it "twists" into marble and granite like cutting butter. 

This diamond finger bit has high concentration of high quality diamonds. While it can be used for granite, marble, quartz, concrete, glass, porcelain, ceramic, etc, it works best for drilling softer granite, marble and quartz, with tools that accepts 1/2" shank. 


Specifications:

• 1/2" Diamond Bur/diamond finger bit with 30/40 grit brazed diamond. 
• Total length: 3-3/4":
• Diameter: up to 1/2"
• Diamond working length: 1-1/3"
• 1/2" diameter shank;
• 2-1/2" shank length;
• Long life with high concentration of diamonds;
• Wet use only

Technical References:

• Clearance: 0.3mm
• Speed: 50%
• Spindle speed: 24000 RPM