1.material:carbon steel,Cr-V and Cr-Mo 2.packing: ... bits sockets set02-583-01 11pcs bit sockets set(1/4")◊11pcs-1/4"Dr.bit sockets:PH1,2,3,PZ1,2 ... ◊1pc-metal shelf02-583-02 9pcs bit sockets set(1/4")◊9pcs-1/4"Dr.bit sockets:T10,15,20,27,30 ... sockets set(3/8")◊4pcs-1/2"Dr.bit sockets:T40,45,55,70mm◊1pc-metal shelf socket set 1/2" 3/8 ...