The built-in strong spring makes it easy to press and rebound quickly. And the universal feature makes it can be used with hexagonal shank bits, cross bits, drill bits, and socket.<br> Two different specifications allow you to choose the most suitable one according to your needs. The small size makes it very convenient to carry and store.<br> Made of chrome vanadium steel material, it is very durable to use.<br> There are two specifications for you to choose from: 50, 60.<br> It is suitable for quick transfer of electric drills, screwdrivers, wind screws, etc.<br> Item Name: Quick Coupling<br> Material: Chrome Vanadium Steel<br> Product Shank Diameter: 1/4 Inch<br> Product Shank Type: Hexagonal Shank<br> Features: Pop-up, Firmly Clamped, High Stability<br> Size Details:<br> 50: 5cm x 2.3cm x 2.3cm/1.97" x 0.91" x 0.91" (Approx.)<br> 60: 6cm x 2.4cm x 2.4cm/2.36" x 0.94" x 0.94" (Approx.)<br> Shank Diameter: 0.635cm/0.25" (Approx.)<br> Notes:<br> Due to the light and screen setting difference, the item's color may be slightly different from the pictures.<br> Please allow slight dimension difference due to different manual measurement.<br> Package Includes:<br> 1 x Quick Coupling