Neiko 30285A Impact Wrench Adapter, 3/8" Drive Female To 1/4" Hex Converter, The NEIKO 30285A Phillips Socket Adapter is a versatile adapter/converter/reducer that will convert any 3/8 inch square drive into a driver with a quick release chuck. Consolidate drilling and socket wrenching into one convenient tool. Spring loaded locking mechanism. Quick release mechanism allows for easy, one handed swapping between bits while working. IMPACT WRENCH ADAPTER: Each Neiko Tools hex to square to hex adapter /converter has duo ends. Female 3/8 inch adapter on one end and a 1/4 inch female hex-adapter on other end providing a socket to bit conversion used in home improvement applications and more. PREMIUM QUALITY: Each phillips socket hex chuck adapter is made with a heavy-duty chrome molybdenum steel construction for durability and allows for the ability to withstand the high shock of impact drivers. SQUARE TO HEX ADAPTER: This impact ratchet chuck adapter converts any hand ratchet, air, or power impact wrench into a drill or ratcheting wrench into a driver or impact screwdriver instantly. QUICK-CHANGE: The 3/8? drive locking quick-release mechanism in the chuck allows for easy, one-handed swapping between impact driver bits while working. Effectively converting your impact driver to a drill adapter. 3/8 TO 1/4? SOCKET ADAPTER: This impact hex adapter securely holds any standard screwdriver bits in a 1/4" hex-shank bit (including insert drill bits) to eliminate the need for expensive driver sockets in your tool collection.