Most suitable for joint preparation, mortar raking, and brick removal. Remove old mortar refilling the joint, which can the bonding effect of the new filler Small areas of mortar, screed, concrete, cement roughness, and coating removal for repainting, repairing, patching, and other preparations 4-point bushing drill bit with 5 7/8-inch chrome steel Suitable for SDS Plus hammer drills SDS Plus 3/8inch (10mm) diameter bushing tool. SDS plus tuckpointing mortar raking it for hammer :2PCS Colour:As Shown Material:alloy steel Size:155mm Package Contents: 2 * Chisel Bit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.