1.030" Steel Retainer for use with #26120 valve springs and #600 valve locks. Valve springs with larger diameters require retainers to handle the higher pressures developed by the springs. COMP Cams Steel retainers are the solution. Our Steel retainers are precision machined from 4140 chromemoly Steel and finished in black oxide. These precision retainers are specifically designed for positive location when combined with COMP Cams high-quality valve springs for superior strength and ultimate stability.