High quality of materials.3 types of holder are used for 3 different stopwatch.Professional,durable,easy to install.Sleek design with integrated out-front bracket.Stopwatch always need a holder to support and this holder will help your stopwatch stable on your bicycel.Specifications:Item Name: Bicycle stopwatch holderType: Speed SensorShape: IrregularNet weight: 8gApplicable models: for edge 200/500/510/520/800/810/1000, iGS50 iGS618 and Blackbird BB10/BB10S, small G/small G+, etc.Colour: BlackMaterial: ABSPackage Contents:1 x Bicycle Computer Holder5 x Rubber ringOnly the above package content, other products are not included.Note: Light 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.