EASY INSTALLATION: Simply tighten two screws and install with an Hex. STAY HYDRATED WHILE RIDING: Bicycle water bottle for quick and easy access when needed. Perfect for road bikes, mountain bikes, hybrid bikes, touring bikes and e-bikes. Multi-point support for more stability. MULTIFUNCTIONAL: Perfect for mountain bikes, bicycles, strollers and wheelchairs. perfect for mounting on handlebars, seatposts, etc., as well as motorcycles, fishing umbrellas, etc. (tube diameter range 55-70mm). Accommodates smaller water bottles and cups within the 70MM standard. Name:Cup Holder Tube diameter range:55-70mm Colour:Black Material:steel Size:20x7x8cm Package Contents: 1 * cup holder 1 * tool 1 * base plate 6 * screw fittings Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.