<p>Purpose: This adapter set is designed to provide a lock-on extension to your existing tool. Provides extra length to reach a multitude of rd-to-reach spaces. Spring loaded lock ensures a tight fit in the driver head to prevent slipping during use. Specifically machined to securely fit a ndheld screwdriver, drill driver or impact wrench.PACKAGE INCLUDES: 3Pcs: 1/4 , 3/8, 1/2 each with 1/4 hex key / screwdriver bits for all quick cnge drill chuck systems.Turns any power drill into a power nut driver. Heavy duty spring loaded bearing holds sockets securely in place. Sockets firmly into place and won't slip.Colorful: Easy to choose: Different color coded rings, clear help quickly choose the right one. Our products belong to the latest upgrades, the quality is super good. Material: Chrome Vanadium QUALITY: Made from rdened chrome vanadium (Cr-V) steel to ensure a long service life. The construction of ving to be compatible with the most powerful impact guns. Usage: Fits comfortably and securely into your drill chuck or ndheld driver. Consists of your most common bit sizes 1/4 , 3/8 , and 1/3 cnge snk sizes Provides versatility and convenience no matter wt tool you ve chosen to use. Great for DIY, automotive repairs, household maintenance, and most general repairs. A good addition to any toolbox set. Product Eye: Silver Quantity Delivered: Three Pieces</p>