Retractable Quick Coupler: Built-in stable lock and high-efficiency spring speed up the replacement of bits. Made of chrome-vanadium alloy steel, stable performance, wear-resistant and durable. Spherical Handle: Non-slip design, press the drill bit to release it, helping you quickly replace it in one second. Universal Hex Shank: With 6.3mm hex handle chuck, quick separation of electric drill and drill bit can be realized. Suitable for electric drill chucks without quick change function such as hand drills and lithium drills. Color: as shown in the picture. Product specifications: Quantity: 3 pieces; Product length: 50mm; Hex Handle Diameter: 1/4 inch (6.3mm); Packing Size: 12*7.5*2.5cm; Product Weight single: 40g; Package weight: 120g; Material: chrome vanadium alloy steel; Magnetic: No. Warm Tips: Please allow slight errors in product size and color due to difference between measurement methods and display screens.