COMP Cams locator spring seat set, pack of 16 with a 1.285 in outer diameter, .525 in ID and .040 in thickness. Made from hardened steel, these spring seats use an inboard locating shoulder to center and hold valve springs in place. The seats are specified for use where the listed dimensions are required and provide a durable indexed surface to retain spring position in compatible valvetrain setups.
COMP Cams Spring Seat 1.285 X .532in X .040in (Set of 16)