[Universal 3 Jaw Design] Classic three jaw design securely holds a wide range of bits with sizes ranging from 1/16 inch to 3/8 inch. [DURABILITY] The chuck features high precision threading and a tightly tapered construction with a rust-resistant Cr-coated body and sleeve with electrophoretic enameling coating. All extensions are treated with rust-proof finishing for extended service life. [Jaw Tightening Key] Easily open and close the three chuck jaws using the included jaw tightening key. [Perfect Combination] Ideal for holding drill bits, small turnings, dowels, pen mandrel shafts, and more. Material: High speed steel. Color: Silver. Package Contents: 1 x B16 16mm chuck, 1 x MT2 handle, 1 x drill chuck key, 1 x B16 13mm chuck, 1 x MT2 handle, 1 x drill chuck key. Only the items listed are included. Note: Lighting and display differences may cause slight variations in color between the image and the actual item. Measurement may vary by +/- 1-3cm.