Upgraded Version: This bottle cage is an upgraded version with a rubber washer, it has a better grip to tighten the bottle cage easily. Extensive Size & Maximum Capacity: The diameter of the holder is about 70mm-80mm, it fits most standard water bottles. The maximum capacity cannot exceed 800g. Easy to install: It can be installed completely without tools. Multifunctional: This bottle cage is perfect for mountain bikes, bicycles, strollers, wheelchairs, yachts, motorcycles, etc. Our upgraded bottle cage can be mounted very firmly, allowing you to enjoy the ride more comfortably. Feature: 1. We offer unique rubber washer to hold the bottle firmly in place. 2. The bottle holder can be installed completely without tools. 3. The bottle holder can be rotated 360 degrees, which is very convenient. 4. The bottle cage offers multiple functions, it is perfect for ATVs, bicycles, strollers, wheelchairs, yachts, motorcycles, etc. Specifications： Material: ABS Plastic + Metal Size: 7cm*14cm Diameter: 70mm~80mm Package includes: 2 pieces of bicycle water bottle cage with carrying bag