Description: Helm cover :High Press Die Cast Zinc Alloy,shot Blast finishing. Shat: Galvanized Steel.No.of steering wheel dia:16inch(400mm). Easy connedtion ,very Minimal fddeback. Bezel kits made from engineering plastic,90 degree and 20 degree options. The steering helm is a gearbox arrangement mounted on the dashboard of the boat . YK7 sterring system is not to be used on boats qquipped with engines that exceed the maximum horsepower rating of the boat and the speed of 50knots(57.5 mph) Specification: Model: YK7 Size(L x W x H): 176mm x 142mm x 222mm/6.92" x 5.59" x 8.74" Max steering wheel dia 400mm (16") Minimal feedback Material: Chromed plated Zinc Alloy 90 degree tilt Contains mounting hardware Package Includes: 1 Piece Mechanical Rotary Steering System