Mini electric grinding drill chuck. Easily locks onto and releases drill bits. General hexagon handle input connection rod from 0.3mm to 8mm Quickly convert any cordless screwdriver into a drill or grinder. Use in Automotives, Garages, Warehouses, Offices, Home and etc. Material: aluminum alloy ,color: black Easy to use and install. Conveniently, safely & quickly. Easily locks onto and releases drill bits. Practical and convenient. Clamping range: 0.3-8mm Overall length: 38+34mm Shank diameter: 1/4 (6.35mm) Hex Shank Specific size as picture shows Package Contents: 1 x Drill Chuck Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. Product Notes: Please allow a little manual errors.Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please confirm acceptance before ordering. About Shipping: Please ensure your shipping informations are correct to avoid delivery issues. All orders are shipped within 3 days after payment. Delivery usually takes 8–12 days, The specific delivery time is depend on circumstances. If you have any questions during your purchase, feel free to contact us. We will respond you within 24 hours.