Material --- Made of high quality metal material, wear resistant and has a long service life. The handle is comfortable to hold, durable and non-slip. Practical --- Suitable for most electric drills and power tools. You can use it to tighten or loosen the chuck, allows you to work faster. Easy to Use --- With a positive and negative ratchet switch, it can rotate forward and reverse, and quickly loosen and tighten the drill chuck, which is simple and convenient. Size --- The double-head design is suitable for most chucks, Small head diameter: 12.7mm, big head diameter: 17.5mm. Professional design with beautiful appearance, a necessary tool. Quality Service --- We offer premium quality and the best service, no matter what reason cause dissatisfaction about our product, please feel free to contact us. We will do our best to bring you the best shopping experience., Weight: 0.220462262 pounds, Manufacturer: Jenngaoo