T-Rex Sintered Diamond Bur / Etching Bit

This T-Rex sintered diamond bit is designed for drilling and etching with the hardest stones including black galaxy. 

Specifications:

• 1/2" Diamond Bur/diamond finger bit with 30/40 grit brazed diamond. 
• Total length:5“
• Diamond Tip Diameter: 1/2"
• Diamond working length: 1-1/4"
• 1/2" diameter shank;
• 3-3/4" shank length;
• Long life with high concentration of diamonds;
• Wet use only

Technical References:

• Clearance: 0.4mm - 0.5mm depending on usage
• Speed: 50%
• Spindle speed: 24000 RPM