This is a high quality metal right angle drill attachment with max.3/8" chuck and 8mm hex shank, which makes it suits almost all standard drills. It can make drill power swerve 90 and get to hard-reached places. A great tool for the do-it-yourself and professional user! Features: Apply aluminum and tool steel, strong durable. 10mm(3/8") chuck, accept 1-10mm drill bits, with a key to tighten/loosen it. 8mm hex shank, suits most standard drills, like: hand/power drills, electric drill, buffing attachments etc. 1500RPM with 25N middot;m torque. Simple to install and operate. Make electric drill power swerve 90 for hard-reached places. Specifications: Color: Black Material: Aluminum + Tool Steel Type: 90 Drill Attachment Hex Shank Size: 8mm / 0.31in Jaw Chuck Range (Diameter): 1-10mm / 0.039-0.393in Max. Speed: 1500 RPM Max.Torque: 25N middot;m Product Size: 15.5 * 9.8 * 4cm / 6.10 * 3.86 * 1.57in Product Weight: 482g / 17oz(With Key) Package Size: 17 * 13 * 4.5cm / 6.69 * 5.12 * 1.77in Package Weight: 486.5g / 17.17oz Package Included: 1 * Right Angle Drill Attachment 1 * Chuck Key