With a three-jaw design, this electric drill chuck can firmly fix a round shank drill bit of 2mm to 13mm. And it adopts a keyless design, which can be locked and released quickly and easily without tool accessories. Electric drill chuck can convert cordless electric screwdriver into drill or grinder in a few seconds, and it is an ideal tool compatible bit conversion. It can quickly change the universal joint, be used compatible impact screwdrivers, and can be easily clamped into electric screwdrivers. It is made of high-quality plastic and metal material. The length of this product is 73mm. The diameter of each product is 42mm. Electric drill chuck is suitable compatible household, workshop, industry, factory, etc. Item Name: Electric Drill Chuck Material: Plastic, Metal Features: Self-locking, No Key Tightening, Large Clamping Range Electric Drill Chuck: Two Types of Patterns, Random Size Details: Length: 73mm/2.87"(Approx.) Diameter: 42mm/1.65"(Approx.) Notes: It cannot be used counterclockwise and is not suitable compatible shock drives or applications involving high torque loads. Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Electric Drill Chuck 1 x Rod