10pcs Titanium Masonry Drill Bit 8mm Concrete Drill Bit with Hex Shank Box Wrenches Thickness (B): 11mm

Thickness (B): 11mm

Widely used for the insulation of color steel tile roof

microphones

Inner Dia : 12

[Simple Use]In one step

10pcs Titanium Masonry Drill Bit 8mm Concrete Drill Bit with Hex Shank Box Wrenches Thickness (B): 11mm1. Made of quality carbide YG6X, the rust resistant treatment and reinforced head prevent the drill from cracking and provide longer service life. The oxygen nitriding treatment of the bit head improves the hardness of the bit 2. Concrete Drill Bits are designed with a U shaped chip discharge groove. This design ensures that all drill dust and chips are collected and released from the drill bit. 3. This 1 4 inch hex shank drill bits can be used on