Features: Made of copper which is not easy to damage, strong and durable. Small and lightweight, easy to carry and use. With a ball pin for basketball, football, volleyball, etc. Easy to install and use, can easily solve the inflation problem. It is suitable for bicycle tires, most inflatable balloons and inflatable mattresses, and inflatable needles for football. Specifications: Material: Metal Size: As picture shows Type: 11pcs/21pcs Note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 11pcs/21pcs Bicycle Repair Tools