RP3614 is the repair kit for single-handle faucets using the ball assembly, seats & springs. The kit is not appropriate for faucets controlled by a self-contained cartridge. Contains: RP4993 (2 seats and 2 springs), RP25 (2 valve body o-rings), RP61 (lever handle cam & packing), RP181 (knob handle cam & packing), RP1974 (1/8" hex key and adjusting ring spanner). Genuine Delta repair part.