About this item 

• Chrome vanadium steel suitable for heavy duty impact drivers. Spring loaded ball bearing on head holds sockets securely. 
• This adapter set Turn your power driver power drill impact driver into versatile Drill nut driver set. 
• The set included 6 pcs, 3in: 1/4-inch, 3/8-inch, and 1/2-inch; 6 in: 1/4-inch, 3/8-inch, and 1/2-inch. 
• This set is perfect for your impact driver or drill, and allows you to replace your ratchet with a power tool. The 1/4" hex shank fits all quickly change chucks as well as standard drill chucks. 
• This Impact socket adapter set also will save your precious time for changing out of Power Drill compared with the traditional hand operated nut drivers.