Material: This bicycle bottle cage adapter is made of aluminum alloy, durable, strong and not easy to break. Application: The mountain bike cup adapter is versatile and suitable for electric bikes, motorcycles and scooters. ADJUSTABLE: This bike water bottle conversion holder is designed to swivel so you can adjust the angle to suit your needs. Easy to install: The bike cup holder is lightweight and you can easily install it on your handlebars and stems. Spare parts: This water bottle conversion holder can be used as a spare part to replace the damaged accessories of your bike. Product size: 55*83*16mm Material: aluminum alloy Applicable installation pipe diameter: 19-40mm Note: The data are all manually measured, please allow 1-3cm error due to differences in light and display, there may be color differences, please refer to actual item received.