Delta Faucet RP77739 Repair Kit For use in Delta single-lever faucets with RP212 stainless steel ball valves and knob handles Repairs leaks in kitchen, lavatory, tub and shower faucets Includes 2 rubber seats, 2 springs, 2 O-rings, plastic cam, rubber packing, #212 stainless steel ball and a wrench Perfect for contractors, maintenance repair professionals and do-it-yourself owners Lifetime limited warranty covers parts and finish defects