The 4-inch long (5/8-inch inside diameter) pipe is inserted through the top hole and welded in place. The brake pedal arm is centered on the pipe and the clutch pedal arm is offset to allow for pedal clearance. Oil-lite brass bushings (1/2-inch inside diameter, 5/8-inch outside diameter) are inserted in each end of the pipes. (Oil lite bushings are made of oil-impregnated bronze and practically never need to be replaced.)