Features: Three types for you to choose, one is compatible for Garmin, and one is for Bryton, and the lasttype is for CATEYE. Adopting tough plastic, lightweight and durable in use. Easy to mount onto the bike computer extension mount(Not included). Enabling your bike mount to install different brands of bicycle computer. Enriching your installation choice. A indispensable accessory in mounting your bike computer onto bike. Specification: Condition: 100% Brand New Material: Plastic Color: Black Compatibility: for Garmin, for Bryton, for CATEYE(Optional) All Diameter: Approx. 3.2cm / 1.3in The Screw Hole Distance: Approx. 21mm / 0.8in(The adapter for Garmin, Bryton) Applicable Common Screw Type & Length(Not included): M3, 6mm / 0.24in(for Garmin, Bryton ), M3, 10mm / 0.39in(forCATEYE) Weight: Approx. 4g Packing List: 1 x Bike Computer Mount Adapter Only * The screw, the bike computer mount all are not included. Note:Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering. .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; } 1Three types for you to choose, one is compatible for Garmin, and one is for Bryton, and the last type is for CATEYE. 2Adopting tough plastic, lightweight and durable in use. 3Easy to mount onto the bike computer extension mount(Not included). 4Enabling your bike mount to install different brands of bicycle computer. Enriching your installation choice. 5A indispensable accessory in mounting your bike computer onto bike.