Equipped with 2 washers and a small wrench, this bicycle tail light bracket is convenient for you to install. Using this bracket helps mount your tail light on your bike seat post. And it has high strength, which is stable and durable. It is constructed of high-strength nylon material. The base diameter of the product is about 4cm. The product is compatible for Garmin Varia Edge 130. Item Name: Bracket Material: High-strength Nylon Compatible Model: for Garmin Varia Edge 130 Features: High Strength, Stable, Easy Installation Size Details: Base Diameter: 4cm/1.57" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Bracket 2 x Washers 1 x Small Wrench