View cart “Counter Sinking Bit | 249CSI” has been added to your cart. $1.00 Diamond Grit Core Bit Size Choose an option6mm8mm10mm12mm16mm20mm25mmClear Diamond Grit Core Bit | 23BOA quantity Add to cart SKU: N/A Category: Diamond Drills Additional information Additional information Size 6mm, 8mm, 10mm, 12mm, 16mm, 20mm, 25mm Related products Spear Bit | 24SPEAR $1.00 Select options Diamond Dry Core Drill | 23DB $1.00 Select options Counter Sinking Bit | 249CSI $1.00 Add to cart