Features: Adjustable Diameter for various bottle sizes. Hold the bottle tightly, no matter how rough the ride is. This water bottle cage adjusts to fit a wide variety of bottles and hold them more tightly. Durable, convenient and light design. ABS material is environmental, tough and durable, which can avoid impact of metal effectively for durable use. Description: Designed to be attached to bicycle handle bar or frame for keeping the water bottle in its place securely. It can be fitted on handlebar,under seat,down tube,fork,front pipe. Specifications: Model: VD-104 Color:Black Material: Plastic/resin Size:78x70mm, diameter: 20mm Packaged included: 1 x Bicycle Handle Cup Water Bottle Rack Adjustable Diameter for various bottle sizes. Hold the bottle tightly, no matter how rough the ride is. This water bottle cage adjusts to fit a wide variety of bottles and hold them more tightly. Durable, convenient and light design. ABS material is environmental, tough and durable, which can avoid impact of metal effectively for durable use.