Trick Flow 1.7 Ratio 7/16 Chevy Aluminum Roller Rocker 

Rocker Arm, 1.7 Ratio, 7/16 in. Stud, Full Roller Design, Aluminum, For Chevy 7.0L/427 engines

Trick Flow® aluminum roller rocker arms are excellent for use with stock and aftermarket cylinder heads. The rocker arms feature heat-treated CNC-machined bodies, premium needle-bearing fulcrums, roller tips, and a machined relief for improved valve spring clearance. Trick Flow® roller rockers come complete with polylocks and are available in sets of 16 Sold individually.
Part Number: TFS-41400621-1  Rocker Arm Mounting Style: Stud Self-Aligning: No Rocker Arm Ratio: 1.7 Maximum Spring Diameter (in.): 1.800 in. Rocker Arm Style: Full Roller Stud Size: 7/16 in. Shims Included: No Rocker Arm Material: Aluminum Rocker Arm Body Style: Standard Rocker Arm Fasteners Included: Yes Rocker Arm Nut Style: Polylock Slot Width (in.): 0.600 in. Rocker Arm Finish: Black Anodized Quantity: 16