MANLEY Lightweight H-13 Tool Steel Retainers [Spring Type Double | Spring 221436 | Spring O.D. 1.290" | Keeper Degree 10 (+.050") | Dimensions A 1.155" B .950" C .675" | Wgt/Grams 15] (GM LS)

For those searching for a slightly more economical alternative to titanium retainers, either to help solve a "wear problem" or because of "class rules," Manley lightweight H-13 Tool Steel retainers are your solution! H-13 tool steel allows for better processing than "other" tool steels typically utilized; thus yielding a stronger, more durable product.

Up to 33% lighter than standard 10° steel retainers
Heat treated to provide a hardness of Rc 56
Only 2-4 grams heavier than titanium versions

10° H-13 Tool Steel +.050 for Manley 13153 valve lock