7pcs Titanium Masonry Drill Bit Set 3mm to 10mm Concrete Drill Bit W Hex Shank 14x20x26mm Body Size: 30 x 57mm/1

Body Size: 30 x 57mm/1

Total Size: 36mm x 23mm /1

Material: High-carbon Steel

* Universal 1/4'' hex shanks fit quick-change/release and firmly lock of chucks

suitable for Indoor & Outdoor lockout applications in Electricity

7pcs Titanium Masonry Drill Bit Set 3mm to 10mm Concrete Drill Bit W Hex Shank 14x20x26mm Body Size: 30 x 57mm/11. 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