high hardness. more durable(高硬度.更耐用)

drill bit (345681012)+ dust collecting box(钻头（345681012）＋集尘盒) drill bit (6+8+10+12)+ dust collecting box(钻头（6＋8＋10＋12）＋集尘盒) recommended 3+4+5+6+8+10+12(推荐款3＋4＋5＋6＋8＋10＋12) drill bit (6+8+10)+ dust collecting box(钻头（6＋8＋10）＋集尘盒) commonly used style 6+6+6+6+8+10+12(常用款6＋6＋6＋6＋8＋10＋12) drill bit (6+6+8+8)+ dust collecting box(钻头（6＋6＋8＋8）＋集尘盒) model combination (6+8+8+10+12)(型号组合（6＋8＋8＋10＋12）) 6+6+6+8+8(6＋6＋6＋8＋8) model combination (6+6+8+10+12)(型号组合（6＋6＋8＋10＋12）) (6+8+10+12)(（6＋8＋10＋12）) model combination (6+6+8+8)(型号组合（6＋6＋8＋8）) model combination (6+8+10)(型号组合（6＋8＋10）) model combination (3+4+5+6)(型号组合（3＋4＋5＋6）) 6+6+8+8+10(6＋6＋8＋8＋10) 6mm 10 pieces +10 expansion screws of the same style(6毫米10支＋同款10个膨胀螺) 6+6+6+8+10(6＋6＋6＋8＋10) 8mm five pieces(8mm五支) 8mm ten pieces(8mm十支) 10mm five pieces(10mm五支) 12mm five pieces(12mm五支) 14mm one(14mm一支) 16mm one(16mm一支) 3mm five pieces(3mm五支) 12mm(12mm) 4mm five pieces(4mm五支) 5mm five pieces(5mm五支) 10mm each(10mm一支) 6mm two pieces(6mm两支) 8mm two pieces(8mm两支) 8mm one(8mm一支) 10mm two pieces(10mm两支) 12mm two pieces(12mm两支) 6mm each(6mm一支) 6+8+10 each four(6＋8＋10各四支) 14+16(14＋16) 6mm20 pieces(6mm20支) 6mm30 pieces(6mm30支) 6mm five pieces +5 expansion screws of the same type(6mm五支＋同款5个膨胀螺丝) (68) five for each(（68）各五支)