1. Nylon combined with fiberglass construction for durability and rigidity. 2. This adapter is perfect for attaching your cycling computer to any mount with a universal interface. 3. A stable way to fix the bicycle computer, and a good solution to expand the use of the bicycle computer in different occasions. 4. Compatible with for Edge 500/510/520/800/810/1000 and GS20 20P 60, , Cateye, Blackbird, Cycling Computers. 5. Support to install for Edge computer with leather case. Wrench diameter: Approximately 2.0mm for Edge, , Cateye, Blackbird, Material: Nylon+glass fiber colour: black Package Contents: 1 x Bike Computer Mounting Adapter 2 x screws 1 x L-shaped wrench Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.