BiKASE's Handlebar/Seat Post Bottle Cage Bracket makes it easy to attach a bottle cage and bottle (both sold separately) to your handlebars or seat post. It's made of durable engineered plastic polymers and includes shims and hardware to fit on handlebars and seat posts with 24 to 32mm diameters or 32mm to 43mm diameters. It also rotates so you can set the bottle where you want it for easy access. - Material: POM head, PP bracket, Stainless steel hardware - Size: 8cm x 6cm x 2cm - Weight: 40 g - Fits handlebar 24mm-32mm - Versatile bracket rotates