Features:This stem top cap is made of qualified aluminum alloy, solid, firm and durable to use, ensures a long service time.You can mount this top cap on your bicycle stem, it can mount different type of computer, easy installation, convenient to use.Suitable for stem tube diameter about 28.6mm.Suitable for Cat Eye computer, for Garmin, viGPSPORT, Blackbird and Bryton.Great accessory for road bike and mountain bike.Specifications:Condition: 100% Brand New and High QualityMaterial: Aluminum AlloyColor: Black, Red (optional)Suitable for Stem Tube Diameter: Approx. 28.6mm / 1.1inchSuitable for Garmin, viGPSPORT, Blackbird, Cat Eye, BrytonWeight: Approx. 45gPacking List:1 x Stem Top Cap for Garmin1 x Adapter for Cateye1 x Adapter for Bryton2 x Wrenches1 x Long Screw