Sold individually for $25.00 each.
A&M Instruments Product Code: 516twistdrill
Grit: 120 Coarse
Head Diameter: 0.312" or 5/16"
Overall Bur Length: 4.5" or 4-1/2"
Shank Diameter: 0.312" or 5/16"
Diamond coating extends 0.50" or 1/2" from the tip.
Note: Always wear proper eye protection and gloves when using any cutting or grinding tool. All diamond tools last longer if a lubricant or coolant is used during cutting or grinding.