SELF-TIGHTENING DRILL CHUCKDurable and has a long service life, suitable for long time working. The chuck can hold the drill bit firmly and securely, not easy to loosen. CompaRed with the traditional drill chuck, this drill chuck self-tightening will be easier to install and disassemble 13MM UNIVERSAL MULTIPLE QUICK CHANGE KEYLESS CHUCKWide range of collet sizes from 13mm, suitable for many types of drill bits. Easy to use, it is an industrial accessory to choose KEYLESS HAND DRILL CHUCKEasy to install and disassemble, more convenient and economical. Keyless and self-tightening type design is more in line with human engineering. suitable for many types of drill bits. That 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 hassle. You dont need complicated procedures to use it.