This kind of bicycle kettle rack conversion seats can be selected from multiple installation positions. Users can fix it according to their needs, firm and long service life.<br/>Features:<br />The diameter of the water cup holder is about 6.5 centimeters, slightly elastic.<br />Suitable for folding car, road car, mountain bike, lady car and other models.<br />Suitable for front and rear drivers, bibcock, front tube, front fork, tops tube, front and rear seats tubes.<br />The fixed seats can be separated from the water bottle rack, and can be installed on the upper and lower pipes as the general water bottle rack.<br />Easy and comfortable, faster disassembly, can be removed from the bicycle at any time, to avoids loss.<br />Can rotate 360°, more convenient to use.<br/>Specifications:<br />Color: black. red, white (optional)<br />Material: plastic<br />Diameter of water holder: 6.5 cm<br />Applicable diameter of fixed seats: 2-4cm (diameter)<br />Package size: 150 * 150 * 80mm / 5.9 * 5.9 * 3.1in<br />Package weight: 110g / 3.9ounce<br/>Packing List;<br />1 * Bicycle Bottle Holder Adapter