The round ring effectively provides a good seal and prevents air leakage and leakage, ensuring the work is ensured This ring is made of rubber material to ensure long-term reliability and durability Compatible with type 3/8" impact wrenches to ensure a perfect fit and improve your tool Round ring size is 0.32*0.05 inch, split clamp size is 0.4*0.08 inch, tool size is 1.37*0.4 inch. Please check the size carefully Includes 1 tool, 3 round rings, 3 ring clamps, enough for daily replacement, Manufacturer: Kfwfuaee