The controller box is made of qualified plastic and metal materials that are rugged and durable.Comes with 4 mounting screws, 4 setscrews and 2 retaining clips for easy installation and operation without additional tools.The controller box provides good protection for your electronic bicycle controller, dust and water resistant, making it the perfect accessory for electric bikes.Simple, perfect molding, classic design.Suitable for lithium battery controllers. Please check if this controller box is suitable for your controller.Colour:blackMaterial:plasticSize:Small:16.5*7.4*5cmPackage Contents:1 * electric bicycle controller boxOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.