Jims Twin Cam Oil Pump Alignment Tool / Evo Tappet Block Alignment Tool Features Dual use tool: Twin Cam oil pump alignment and Evo/Shovelhead tappet block alignment Order two alignment tools for Twin Cam oil pump alignment (these are sold each) Proper alignment helps reduce oil scavenging problems associated with oil pump misalignment Order one alignment tool for use on Evo tappet block alignment Used to make sure the roller tappet tracks on the center line of the cam lob 1/4-20 threads Made in the USA