Professional and Practical: 10mm keyless chuck, 0.8-10mm drill bit can be accepted, and can be tightened/loosed manually. The highest 1500RPM and 20Nm torque. Compatibility: It is suitable for most standard drills with 8mm hexagon shank, such as manual/electric drills, electric drills, polishing accessories, etc. 8mm hex shank suits most standard drills: hand/power drills, electric drill, buffing attachments etc. Household Essential Tools: This 90-degree right-angle corner can be used to help repair in some narrow corners and small places. The electric drill can be rotated 90 in hard-to-reach places. It is a necessary maintenance tool for every family, and it is small in size and does not occupy space. Rugged and Durable: made of aluminum and steel, high quality and durable, long life, high safety. If you have any questions, please contact us in time and we will try our best to help you.