Holman rock drill : RB (666) Holman rock drill : RB (777) Bohler Picorurs : (A7,A9) DP7G  Chisels : (35,32,30,28,26,25,22,19,14,12) This set has weight about 38-40 kg . and is used for hard works, because its piston course is long and create high energy, this set is used for asphalts and reinforced and unreinforced cocretes and also for places that explosion is impossible.