UflexSingle Lever Top Mount Control w/Neutral Lock - No Trim Switch - Black [B501B/L]Single Lever Top Mount Control w Neutral Lock No Trim Switch Black In the twin engine installation a single switch will operate both trims. With a focus on efficiency these controls have been specifically designed to improve the functionality of control systems, making the boat easier to control. Single lever dual action control to operate both with throttle and shift. Suitable for any type of boats with outboard, inboard or I O power plants.