Features: *Made of alloy material, high hardness and wear resistance, can be used for a long time. *A spiral shaft also increases removal to leave clean drilled holes. *Matches brick, block, stone, light concrete, ceramic, hardwood board, glass and marble materials. *If you drill hard material (glass, porcelain floor tile, marble or granite), please use water for lubrication. Specifications: *Materials: carbide steel. *Quantity: 5/10 pieces. *Color: Black *Item Type: Drill Bit *Shape: triangular shape handle. * Diameter: 6.0 mm. *Length: 100 mm (approx.) (Note: the DIA is measured by triangular part, not the thread part). Package Content: 10 x drill bits. or 5 x drill bits.

*Matches brick, block, stone, light concrete, ceramic, hardwood board, glass and marble materials. *A spiral shaft also increases removal to leave clean drilled holes. *Made of alloy material, high hardness and wear resistance, can be used for a long time.