Check the listing for details. Ebike Electric bike Controller 36V 500W Brushless Motor Speed Controller NEW. Condition: New, Made in United States. Listed at 22.20 USD. Specification: Voltage: 36V Wattage: 500W Power tube: 12 Color: silver Size:5.78in*3.22in*1.57in Casing material: Aluminium Suitable for electric bicycles and scooter. Feature: 1.The controller shell is made of aluminium alloy, that could protect the inner circuit and has good heat dissipation 2.The motor controller climbing power is stronger, the motor operation sound is low,eliminate tire noise. 3.Intelligent chip design could more matching controller, can improve efficiency and speed, higher withstand voltage. 4.Sensitive Control--This item is a brushless motor controller, it can provide steady speed and sensitive control of braking and direction changes. .