5 Piece Carbide Tips Drill Bit Set Hex Shank for Metal, Block, Brick, Soft Tile,
Shank type Hex. Shape Hex Shank. 【Longer Drilling Depth】 Longer than normal hex drill bits in the market, drill deeper holes for your special drilling demand, 4mm, 5mm drill bits are 120mm long, 6mm drill bits, 8mm and 10mm are 150mm long.