Made of chrome plated brass. Each separate lever controls clutch and throttle for one engine. Functions easily identified by red and black knobs. Designed to use 33C type control cables. Shims and cable clamps are made of brass are supplied for easy installation. Overall height 8-5/16 (22.7cm)Base: 4-5/16" W x 5-7/16"L x 3" H10.94cm x 13.81cm x 7.62cm