[Features] Each socket has a knurled ring for extra grip Chromium-vanadium alloy steel, high hardness, large torque, lengthening better use [product information] Product name:7 piece press batch sleeve set Color:As shown in the figure Material:Chromium vanadium alloy steel Size:217*44*110mm Packing list (you can get after purchasing one item): 7 piece press batch sleeve set*1 Please understand: 1. Due to the long shipping time, the item may be damaged during the shipping process, if the item is damaged, please leave us a message through the official website immediately before posting comments, and I will solve the problem for you. 2. Due to manual measurement, the size may have an error of 1-3cm. 3. Colors may vary from monitor to monitor.