Product Description Specifications CNC-machined for consistency, this 7 degree tool steel retainer features light weight, exceptional strength and wear characteristics. Fits 8mm valve engines with a 1.290" O.D. spring such as our 26915, 26918, 7228, 7230 and 7256 springs. Category: Engine Components>Valve Springs, Retainers Core: N LTL: N MPN: 1772-1 Proposition 65: Y Special Order: Y