It is an essential tool for your daily bicycle repairs. It is made of aluminum alloy material and easy to carry, you can carry it easily and hold it by one hand. If you are looking for this product, come and have a try, it will not let you down. Features: Preferred Material: This repairs tool is made of aluminum alloy material and has the characteristics of wear-resistant, not easy to break or bend and has a long service time. Comes with a callipers for you to use, and the callipers is work with 1.5/1.6/1.7/1.8/1.9/2.16. Wide Applications: This tool is used to measure the tension value, covering from steel round spokes, flat spokes, aluminum round spokes and other most spokes in the market. Easy to Use: This tool is easy to operate, first, hold the tensiometer and place it correctly on the spoke to be measured, then release the tensiometer, wait for the pointer at the index to stand still and read the value, and then check the spoke tension table. Portable Size: This tool is small size and easy to carry, you can put it into your bags to carry for your use. Specifications: Material: aluminum alloy Item size: 191 * 122mm / 7.5 * 4.8in Item weight: 166g / 5.9ounce Package size: 205 * 145 * 30mm / 8.1 * 5.7 * 1.2in Package weight: 220g / 7.8ounce Packing list: 1 * Tensiometer 1 * Callipers