Crower 74174F Features:

17-4 stainless steel shaft rockers for Brodix SBC Spec SP CH cylinder heads 5/8 in. 52100 alloy steel shaft for high-performance valvetrain stability CNC precision-machined, double heat-treated, micro-finish-ground shafts Fully rollerized precision needle-bearing fulcrum with hardened tip wheels

Shaft Rockers Brodix SBC 5/8 In. Shaft, 17-4 Stainless, Features:

• 17-4 stainless steel rockers with 5/8 in. shaft for Brodix SBC Spec SP CH heads, high-stability valvetrain design
• 52100 alloy steel shaft, CNC-machined, double heat-treated, micro-finish ground for strength and precise rocker motion
• Fully rollerized precision needle bearing fulcrum for reduced friction, smoother operation, and dependable high-rpm control
• Hardened tip wheels help minimize valve scrubbing, supporting more accurate valve action and reduced component wear
• Aircraft-quality hi-temp alloy lash adjusters for reliable lash control in demanding small-block Chevy performance use