COMP Cams Ultra Pro Magnum XD Chromoly Roller Rocker Arm - 7/16 in Stud Mount - 1.80 Ratio - Big Block Chevy (Set of 16) MT-PRO-SPOD-B The pushrod seat is made

The pushrod seat is made of a special powdered metal iron alloy that is heat-treated for strength and wear resistance

Sight Window

10" with enough material to open it up to larger port openings

20 AN Female to 20 AN Hose Barb

COMP Cams Ultra Pro Magnum XD Chromoly Roller Rocker Arm - 7/16 in Stud Mount - 1.80 Ratio - Big Block Chevy (Set of 16) MT-PRO-SPOD-B The pushrod seat is madeThe next design evolution of the Hi Tech Stainless Steel Roller Rocker Arms are built to outlast and outperform in accuracy and strength. The Ultra Pro Magnum XD Rocker Arms are engineered from durable 8650 steel and include a machined billet pushrod seat insert for a wide range of super accurate ratios. A unique and wide ratio range to fit almost any popular application. These XD rockers are fully rebuildable and boast precision sorted needle