Features: *Made of high-quality carbon steel, it can achieve durability and support through daily use to quickly switch tasks and keep working. *Comfortable big spherical grip, anti-slip design, more convenient one-hand operation, press down can release the ejection bit, realizing. *It is suitable for clamping on electric drill chucks without quick function. *The clamping diameter of the chuck needs to be greater than 6.3mm. After the connection is stable, it is convenient to quickly replace the power tool accessories with a hexagonal handle. *Single-headed screw extractors can be quickly connected. Double-head screw extractors are only applicable 0-3 specifications. No. 4 extractor that exceeds the diameter of the opposite side of 6.3mm cannot be installed. *Use for deck building, wood framing, installing plywood subfloor, building crates, and more. *This quick-change connector is non-magnetic, has a built-in stable lock and high-efficiency spring, and has excellent concentricity. *Two products can be connected for extended use. Specifications: *Material: Carbon Steel *Shank: 1/4" Hex Shank *Length: approx. 50mm/60mm *Maximum diameter: 24mm (Approx.) *Quantity: 2pcs Package Includes: 1*50mm Auto Hex Shank Quick Coupling 1*60mm Hand Hex Shank Quick Coupling Notes: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data.