【HIGH QUALITY AND DURABLE】Bike bottle holder is made of eco-friendly plastic steel and metal parts, safe and harmless. The bike rack is extremely durable and designed to store cups, cans and bottles, making it ideal for bikes, strollers or motorcycles. 【360 Degree Rotation and Adjustable】Mountain bike bottle cage can be rotated and adjusted 360 degrees, easy to hold water bottle or drink cup. This is a very user-friendly and practical bicycle cup holder. 【Easy to install and use】Bike bottle cage, can fix various bottles to various positions. Can be mounted on handlebars, under seat, down tube, fork, head tube. 【Equipped with Gasket and Anti-Slip】The bicycle cup holder is equipped with a gasket to prevent scratches, non-slip, which can firmly hold your cup or bottle in place, preventing drinks from spilling or falling. It is perfect for mountain bikes or folding bikes. [Widely used] The diameter of the cup holder is about 6.5 cm, slightly elastic, not very elastic, and the material is hard. Applicable pipe diameter of the fixed seat: 1.5-4.2CM/The fixed seat can be separated from the water bottle cage. It can be installed on the upper and lower pipes of the general water bottle cage, which is convenient and easy to disassemble. It can be removed from the bicycle at any time to avoid loss.