
HIGH HARDNESS MATERIAL: Using carbon steel + YG8C alloy, our drill bit set is made of reinforced and durable thickened alloy with anti-rust treatment, long service life and higher hardness than ordinary drill. Chisel and drill bit are also combined, and the pointed tip design is more convenient to use, saving time and enabling fast drilling. WIDELY USED: Only suitable for openings in ceramic tile, concrete, red brick, marble, wood, glass, plastic, etc. downwards. PACKAGE INCLUDES: total 12pcs, 3mm, 4mm, 5mm, 3x6mm, 2x8mm; 2*10mm, 2*12mm; Widely used in home decoration, manual DIY and other fields. UNIQUE DESIGN: With exquisite craftsmanship, sharp cutting edge, hardening and anti-fracture, high temperature quenching, fast drilling, fast removal of wire chips, etc. Unlike the triangular drill made of wear-resistant hard alloy, the drill is carefully polished and the texture is uniform. TILE DRILL: This drill can be used for many kinds of machines, such as ordinary hand drills, bench