【12-in-1 Tool Set】--Impact grade socket adapters and extension reducers set included 4 pcs of 1/4 inch drives, 2 pcs of 3/8 inch drives, 2 pcs of 1/2 inch drives. Two adapters in 1/4 (F) to 3/8-inch (M) and 3/8 (F) to 1/2-inch (M) sizes, and two reducers in 3/8 drive (F) to 1/4-inch drive (M) and 1/2 drive (F) to 3/8-inch drive (M) sizes. 【One Set For Unlimited Uses】--1/4 inch hex shank fits for all quick change drill chucks. Perfect size makes it compatible with all brands of power drills and screwdriver handle tools. 【Durable Material】--Each socket adapter is constructed of heat treated vanadium steel and black oxide coated, and with stand torque compression and superior strength which is accordance with the standard operating conditions. 【Unique Design】--Specific impact grade design made exclusively for drivers and wrenches, spring loaded ball bearings on each square head securely and locks into sockets to avoid slippage during using. 【Not A Little Uses】--This extension socket adapter is ideal for using on automotive repairs; DIY and most of general household repairs, a great tool addition to any tool box set., Weight: 0.661386786 Pounds, Manufacturer: FOROREH