Type of application: Suitable for motorcycle, electric vehicle, ATV rearview mirror base installation Usage features: Add this rearview mirror holder which can be used to fix external headlights, mobile phone holder, etc High quality material: The product is made of high quality aluminum alloy material, strong and durable Product description: Weight 50G, with 2 support holes are 0.314in hole and 0.236in hole Quality guarantee: Can not install, can not be used, can be returned for a full refund