Multi-purpose:Faucet installer most suitable for supply nuts,shut off valves,strainer baskets,supply line nut,faucet nuts.Open slot allows for easy access to existing supply lines,simpler and more convenient than traditional tools. The product is heat treated as a whole, with high hardness, large torque, good toughness and long service life. Forged chrome vanadium steel, rust-proof and beautiful. The hardness of the product ensures the safety of twisting and ensures sufficient torque.