size:8pc:6-22mm 6*7.8*9.10*11.12*13.14*15.16*17.18*19.20*228pc:6-24mm 6*7.8*10.10*12.12*14.14*17.17*19.19*22.22*2410pc:6-32mm 6*7.8*10.10*12.12*14.14*17.17*19.19*22.22*24.24*27.30*3212pc:6-32mm 6*7.8*9.10*11.12*13.14*15.16*17.18*19.20*22.21*23.24*27.25*28.30*32