There are two main types of drill chucks on the market today. One is the wrench drill chuck and the hand tight drill chuck, both of which are used to clamp drilling tools by human input of clamping force. Wrench drill chucks can be categorized as heavy duty, medium duty, light duty, and hand tight drill chucks can also be called wrenchless drill chucks. Another category is the self-tightening drill chuck. He can automatically increase with the increase in clamping force required while drilling. In terms of price, light wrench drill chucks, heavy wrench drill chucks, hand-tight drill chucks, and self-tight drill chucks are in increasing order. The difficulty of the machining process is also more difficult in that order. In the market share of hand-tight drill chuck accounted for more than 60%, light than the heavy use of some of the largest amount, the least amount is, self-tight drill chuck.