Features1This stem top cap is made of qualified aluminum alloy, solid, firm and durable to use, ensures a long service time. 2You can mount this top cap on your bicycle stem, it can mount different type of computer, easy installation, convenient to use. 3Suitable for stem tube diameter about 28.6mm. 4Two options for choosing, for Cat Eye computer or for Garmin, viGPSPORT, Blackbird, such as for Garmin 1000, 820, 810, 800, 520, 510, 500, 200. 5Great accessory for road bike and mountain bike.SpecificationFeatures: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.Great accessory for road bike and mountain bike.Specifications: and High QualityMaterial: Aluminum AlloyColor: BlackSuitable for Stem Tube Diameter: Approx. 28.6mm / 1.1inchfor Garmin suitable for Garmin, viGPSPORT, Blackbird, such as for Garmin 1000, 820, 810, 800, 520, 510, 500, 200for Cat Eye suitable for Cat Eye ComputerWeight: Approx. 21gPacking List:1 x Stem Top CapPackage List