1.material:carbon steel,Cr-V and Cr-Mo 2.packing:plastic case 3.finishing:chrome vanadium ◊1 pcs extension rod◊9 pcs bits straight:5mm,6mm,7mm cross:PH1,PH2,PH3 quincunx:PZ1,PZ2,PZ3◊9 pcs socket 5mm,6mm,7mm,8mm,9mm,10mm,11mm,12mm,13mm 19 pieces connector socket