Description: Made of aluminum alloy (frame) and plastic (adapter, etc.)conversion seat. Lightweight and durable, wear resistance and pressure resistance. The size is 81×42 mm/3.1×1.6 inch, enough small to save place. Using CNC anode process.It is easy to install, easy to carry. Multi-functional bracket, can be loaded with a code table, mobile camera, mobile phone, flashlight, etc. Suitable for Garmin & for Bryton & for Cateye. For Garmin: Edge 20, Edge 25, Edge 500, Edge 510, Edge 520, Edge 800, Edge 810, Edge 820, Edge 1000, Edge Touring. For Bryton: Rider 20, Rider 21, Rider 30, Rider 35, Rider 40. For Cateye: CC-PA100W/500B,CC-RD300W/310W/400DW/410DW/420DW/430DW/500B, CC-VT210W/220W, CC-MC200W, CC-GL51/50/11/10, CC-PD100W, CC-COM10W. Specification: Material: aluminum alloy (frame) and plastic (adapter, etc.)conversion seat. Size Chart: Size: 81x42mm/3.19x1.65inch. Package Includes: 1 Set Bicycle Code Table(2 Pack) Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful on-line shopping!