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

❃❃❃ 【Anti-Rust】 The housing is treated with electrophoretic paint, making the product anti-rust even in the worst environment. ❃❃❃ 【Excelent Performance】 By using anti-thrust bearing to convert key-applied torsion into superior gripping. ❃❃❃ The clamping jaws are specially treated to improve wear resistance. ❃❃❃ 【Easy to Ues】 High-accuracy thread and tapered holes can be tightly attached to the tool. ❃❃❃ 【Instructions for Use】 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.