This QA1 valve disc kit contains eight replacement discs sized 10 mm inner diameter x 28 mm outer diameter and roughly 0.400 mm (about 0.015 in) thickness. Intended for valve rebuilds and routine service, the kit supplies proper-dimension discs to restore valve performance and is part of QA1’s service parts lineup backed by technical assistance for correct installation.
QA1 Valve Disc Kit - 1.100in OD x .015in Thick - 8 Pack