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 holder Type: Speed Sensor Shape: Irregular Net weight: 8g Applicable models: for edge 200/500/510/520/800/810/1000, iGS50 iGS618 and BB10/BB10S, small G/small G+, etc. Colour: Black : ABS Package Contents: 1 x Bicycle Computer Holder 5 x Rubber ring Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.