Features 1、HIGH QUALITY MATERIAL: The body of the bicycle mini air cylinder is made of aluminum alloy material, CNC machining art, strong and durable. 2、SPECIAL TREATMENT: The surface of the air cylinder is anodized, with high gloss, not easy to fade, the storage length is 21cm, and the opening is 31cm. 3、RETRACTABLE DESIGN: The air cylinder adopts a retractable design, which effectively reduces the volume of the cylinder body, takes up less space, and is easy to carry. 4、MANUAL SWITCHING: Mini pump lightweight and convenient, greatly reducing the weight of the gas cylinder. Manual switching between valve and presta valve. 5、SWITCH LOCK: There is a switch lock at the connection between the air nozzle and the cylinder body, which can be turned on and off by gently rotating the air nozzle on the head, which effectively avoids unnecessary losses caused by the random swing of the air valve belt during riding. Item Type: Mini Pump Material: Aluminum Alloy Storage Length: Approx. 21cm/8.3in Open: Approx. 31cm/12.2in Features: 1. Lightweight and Compact 2. Manual Switch Between Valve and Presta Valve 3. Aluminum Alloy Barrel Package List 1 x Ball Needle 1 x Ball Needle Hat 1 x Pump 2 x Screw 2 x Screw Hat