Competition Cams 787-16 Steel Retainers, 7 degree Angle for 26915 and 26918 Beehive Springs 7 degree angle retainers for 1.055 inch diameter valve springs, 11/32 inch Valve Stems O.D. - 1.030 inch, Step 1 - .640 inch Precision machined from 4140 chromemoly steel and finished in black oxide Designed for positive location when combined with COMP Cams high-quality valve springs