3.0 16MM 1 2 20UNF Drill Chuck Adapter Kit Key Type Drill Chuck with 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. 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. Specification: Clamping range: 3 16mm 0.12 0.63in Package List: 1 * Drill Chuck 1 * Key 1 * Electric Hammer Square Shank Adapter . Note: