4pcs Titanium Masonry Drill Bit Set 6mm to 8mm Concrete Drill Bit W Hex Shank 5-6RPM CCW/CW 7inch (L*W)

7inch (L*W)

and then slip off in a gooey mess

Thread Size:5/16" x 2" (D*L)

Static Load Rating (Cor): 113N

Each Size(Approx):  63 x 18

4pcs Titanium Masonry Drill Bit Set 6mm to 8mm Concrete Drill Bit W Hex Shank 5-6RPM CCW/CW 7inch (L*W)1. 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