Hardened center screw with sliding T-bar handle, easy to use. Hardened steel chrome-finished ensures strength, producing 45-degree flare angle. For flaring lines, braking pipe repairs, water, gas, refrigeration and brake line applications. A standard flaring tool set for flaring the brass tube, aluminium pipe and tainless steel tube of thin wall. Replace the gas line from the propane tank to the house and they can make perfect flares and connections don't leak