The Blade Motor Controller for Ryobi 40V Mower models RY401015US and RY401014US is a durable and efficient part designed to operate on a battery power source. Made of plastic, PVC, and steel, this controller by Ryobi is specifically compatible with these models and has a 2 HP horsepower output. With a voltage of 40V, this controller is a reliable option for maintaining your lawn mower's performance. With a compact design measuring 2 inches in width, this controller is a crucial component for your Ryobi mower.