Ventilfederhalter Chrom-Molybdän-Stahl SBM / BBM Brand: COMP Cams Manufacturer's Part Number: 744-16 Part Type: Valve Spring Retainers Product Line: COMP Cams Steel Valve Spring Retainers Outside Diameter of Outer Spring (in): 1.500 in. Retainer Material: Steel Lock Style: 7 degree Valve Spring Style: Standard Retainer Style: Standard Number of Springs Per Valve: Dual Outside Diameter of Middle Spring (in): 1.060 in. Inside Diameter of Inner Spring (in): 0.690 in. Locks Included: No Quantity: Sold as a set of 16. Notes: Will work with single or dual springs. New valve springs with larger diameters require new retainers to handle the higher pressures developed by the springs. COMP Cams steel retainers are the solution. Precision-machined from 4140 chromoly and finished in black oxide, these retainers are specifically designed for positive location when combined with COMP Cams' high-quality valve springs. They're available for single, double, and triple-spring applications.