SincereetaliCHUCKThe chuck diameter is 43mm/1.69inch, the length is 58mm/2.28inch, the connection size is 1/2-20UNF, the clamping range is 2~13mm/0.04~0.51inch, before purchasing, please confirm whether your hand drill is compatible with this electric drill chuck! SELF-TIGHTENING CHUCKDurable and has a long service life, suitable for long-time work. The chuck can hold the drill bit firmly and securely, not easy to loosen. Compared with the traditional drill chuck, this keyless drill chuck will be easier to install and disassemble! UNIVERSAL MULTIPLE QUICK CHANGE KEYLESS CHUCK 2~13MMWide range of collet sizes from 2 to 13mm, suitable for many types of drill bits. Simple to use, it is an industrial accessory worth choosing! KEYLESS HAND DRILL CHUCKEasy to install and disassemble, more convenient and economical. The keyless and self-tightening type design is more in line with human engineering. suitable for many types of drill bits. Which can meet your needs. HAND DRILL CHUCKThe chuck can hold the drill bit firmly and securely, not easy to loosen. You can use this product without much worry. You don't need complicated procedures to use it.