Function-FormedÖ style milled from 6061 T-6 aluminum Low-Profile design features allow maximum exhaust clearance Stainless steel bolts and gasket included 12-point stainless steel ARP bolts and gasket included 1-1/8" diameter piston included Large 5/16"-24 bleeder screw for durability Kit includes actuator rod with bearings, center rod, clutch adjuster and plate with retaining ring, and M8 hydraulic line adaptor Made in the USA Designed for use on M8 models with OEM hydraulic clutch as well as M8 models being converted to a hydraulic clutch. Will require the use of a 15mm bore master cylinder.. COVER TRANS M8 HYDRAULIC POLISH