【Specification】Material: High carbon steel; Clamping range: 1/32 inch - 5/8 inch; Accuracy: 0.01 cm/0.005 inch; Product size: 1/32-5/8 inch. 【High Accuracy】The keyless drill chuck is made of high carbon steel, which is more durable and has a long service life. It can achieve precise clamping with less error as the accuracy of the keyless drill chuck is 0.005 inch. 【Keyless Automatic Clamping】No need to use a key. All you need to do is tighten it by hand after clamping the tool to achieve more convenient clamping. 【Durable】It has been specially hardened so that its hardness and impact resistance have been significantly improved. The fine workmanship and exquisite craftsmanship give you a better experience. 【Application】The drill chuck's design makes it more stable to attach to the table, drill, milling machine, lathe and difficult to fall off. It is suitable for portable tables, pillar drills, milling machines, lathes, etc.