This pneumatic tire protections sleeve toolbox has five different specifications of sleeves, which can meet the basic needs of users with nice hardness and long service life. Features: Diverse specification, can be adapted to different styles of screws, versatile tool kit. Fine-quality materials, rust prevention, high hardness, high torsion. Equipped with a tool box, convenient and simple storage, easy to keep. Equipped with 15mm, 17mm, 19mm, 21mm, 22mm species size sleeve, can meet the needs of most users. The edges design is round and smooth, and the tire and other objects will not be scratched during use, so it is safe to use. When used with a wrench of the corresponding size, the screw on the tire can be easily removed to facilitate tire maintenance. Specifications: Material: chrome-vanadium steel Item weight: 15mm: 135g / 4.8ounce 17mm: 160g / 5.6ounce 19mm: 178g / 6.3ounce 21mm: 209g / 7.4ounce 22mm: 250g / 8.8ounce Package size: 240 * 150 * 70mm / 9.4 * 5.9 * 2.8in Package