37056 Features: -Includes H546 O-ring, H548 SD stem, H569 rubber seat, H570 adjusting sleeve, H571 insert plug, H585 spring. -Carded. -Rebuilds 3/4" screwdriver stops H600-A, H600-AG, H540-A and H540-AG. -Reference No. 3308856. -Dimensions: 1.25" H x 4" W x 5" D.