A. Capacity Range - 3-16mm(1/8-5/8 Inch); Mount Thread: 1/2-20UNF B. You get The SDS-Plus bits, 1/4inch hex shank lock key, 1/2 inch socket square female adapter, hex dandle converter and 2pcs 16mm key wrenches; This Converter Conversion Tool can transform power impact wrench to a drill or grinder in seconds C. Class 3-Jaw Design - Class 3-jaw design allows you to hold round-shank drill bits from 3mm to 16mm securely D. Durability - The chuck is high precision threaded and tapered tightly with rust-coated body and sleeve electrophoretic enameling coating. All the extensions are applied with rust-proof finishing for extended service life E. Note - The product can NOT be used counterclockwise. It must be transferred hammer drill stalls when use the hammer chuck, other stalls lead chuck broken F. Colour:As Shown G. Material:Metal H. Package Contents: 1set x drill chuck adapter. Only the above package content, other products are not included I. Note: Light reflection 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 J. Note: 1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2. 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 make sure you don't mind before ordering, thank you! K. About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours. Hope you have a pleasant shopping experience!