Made of high carbon steel, tungsten carbon or CV), brad point with two shoulder cutters. Center point enters first; prevents "skating". Cutting flutes are engineered for optimum chip ejection so drill wont bind and burn out. For drilling accurate, splinter-free holes in soft wood, hard wood, plywood and hardboard. Diameter: 3 -26mm (1/8" -1") Length: 150/160/200/300/400/600mm (6",8",12",16" SPECIFICATION(MM) PACKING QTY/CARTON(SET) CARTON SIZE(cm) WEIGHT/CARTON(KG) 4，5，6，8，10 INNER:PVC BAG OUTER:CARTON 100 48?SPAN lang=EN-US>27?0 G.W. N.W. 13．5 12．5