3.0-16MM 1/2-20UNF Drill Chuck Adapter Kit, UNF Key Type Electric Drill Chuck with SDS Electric Hammer Square Shank Adapter

【Features】--High-accuracy thread and tapered holes can be tightly attached to the tool.The housing is treated with electrophoretic paint, making the product anti-rust even in worst environment. 【Superior Gripping】--By using anti-thrust bearing to convert key-applied torsion into superior gripping.The clamping jaws are specially treated to improve wear resistance. 【3-16mm 1/2-20UNF】-- 3-16mm denotes that clamp the drill between 3mm and 16mm, and 1/2-20UNF represents a screw hole with 1/2-20UNF at the back of the chuck. 【Package List】--1 * Drill Chuck;1 * Key;1 * Electric Hammer Square Shank Adapter 【Quality Assurance】-- brand new and the quality of our products is guaranteed and can be used without hesitation. If you have any questions during use, please feel to contact us.