Set consists of 1 of each drill bit the drill bit heads have an extremly sturdy and hard wearing hard metal edge which enables them to carry out even hard jobs fast drilling progress the asymetrical spiral shape aids the dust discharge the drill bits are very strong and have a long life 6 x 160 mm 8 x 160 mm 10 x 160 mm 8 x 210 mm 12 x 210 mm 10 x 260 mm 12 x 260 mm 14 x 260 mm and one of each chisel chisels can be used for all chiselling breakthroughs and demolition work