This product is only suitable for Tomofree DK200 e-bike, please make sure that your model matches this product. Material: Alloy and Plastic *Note: As your previous purchase may belong to different product batches, please provide the Motor Code of your Ebike/Escooter. This will help us ensure that the parts/accessories we send you are compatible with your specific model. If you are unable to confirm this information,please contact online customer service or send an email info@tomofree.com.