3 Review(s)

Carbide tipsDual blade design for faster, cleaner cutsIncludes plain brad point drill, 4mm hex key wrench, 1-1/4'' drill bit and 2 cutting bladesDrill bit size: 1/4'' with 118 degree split pointShank size: 3/8"Package Included:1 x Alloy hole openerHow to use:1. two blade the central drilling distance are equal, can open the hole.2. two blade the central distance of the drill are not equal, can get rings and concentric circles.3. Before drilling to check if the blade is fixed and the adjustable diameter bolts tightened to prevent accidents4. When the blade is not sharp, please grind the blade and use it.Features:1. Wide range of uses, the hole diameter size can be adjustable.2. Alloy blade, smooth cut, the hole wall is smooth good effect of.3. Roundness right, opening hole depth 30mm.