STRAUSS Bicycle Bottle Holder and Bicycle Speedometer, (Black/Red) Upgraded grip - this bottle cage is upgraded clamp with a rubber pad Expanded size - this quick release bottle cage fits for most standard-sized water bottles. 2.5 inch - 3.3 inch bottle in diameter. No tool needed - the clamp of the bottle cage is designed for easy to installation and remove, no tool needed Easy to install and use it is easy to follow instructions, great basic functions of the speedometer and very specific tire size that enable accurate calculations This bicycle speedometer is waterproof and works great on rainy days as usual when riding. Portable size, light weight, wide application this bike odometer is only for 1.8 x 1.8 inches (l x w) and 0.18 lb, which is easy to carry and save your space Portable size, light weight, wide application this bike odometer is only for 1.8 x 1.8 inches (l x w) and 0.18 lb, which is easy to carry and save your space