Topeak Versamount As the name implies, the Topeak Versamount is a versatile mount for cages or accessories. The mount allows you to attach a water bottle cage to a bike that doesn't have water bottle cage bolts. The mount can also be used to attach accessories such as tubes to your bike frame. Features Material: Engineering grade polymer Max load: 3. 3 lb (1. 5 kg)Fit tubes: 20-60mm in diameter Weight: 26g | Topeak | Versamount | Black | 20-60Mm Diameter Tubes, 2 Pcs | Plastic