Fully CNC-machined from billet aluminum with a precision diamond knurl pattern that ensures no-slip grip performance, Special hard black anodized finish for exceptionally smooth action and durability over plastic units, Works super smooth due to the precise bore finish; works especially well with a light coating of lithium grease, Works perfectly with Joker's JX and Dual Cable style throttle housings, Accepts all late-model dual Harley-Davidson throttle cables (accepts 1/4" round or cylindrical cable lugs), Made in the U.S.A.