About this product: This product is a practical bicycle trailer device for traction. Using durable steel and nylon band structure, strong and durable. Application to quick release or nut shaft wheel.Not applicable to disc brake. With a full hanging arm and hanging junction, it's easy to install without any additional tools. The mounting device can be compatible with universal bike and electric bike. Product Description: This product is a practical bicycle trailer device for pulling. With a complete hooking arm and hooking junction, it is easy to install without any other tools. High quality steel ensures durability and durability. high applicability.The mounting device can be compatible with universal bicycle and electric bicycle.Application to quick release or nut shaft wheel.Not applicable to disc brake. Features: - color: As shown in figure. - materials: plastic and copper. - Size: about 20cm (length).- This product is a practical trailer device for traction. - the use of durable, strong and durable steel and nylon bands. - be equipped with a complete hanging arm and hanging fitting, and easily installed without any other tools. - mounting devices can be compatible with generic bicycles and e-bikes. - for quick release or shaft nut wheels. Does not apply to disc brake. Package includes: A bicycle trailer.