Lowes offers Kobalt 22-Piece 1/4", 3/8" and 1/2" Drive Accessory Set for $20 (Reg $43). Free shipping on orders over $35. 

Product Description:
This 22-piece drive accessory and socket set will help you tackle any out-of-reach fastener so you can complete your task with ease. A wide assortment of 1/4-inch, 3/8-inch and 1/2-inch drive adapters and extensions help increase the use of your mechanic's hand tool set, allowing you to complete more tasks.

• This assorted drive accessory set provides a great selection of extensions and adapters, no matter what drive size you are using
• 1/4-Inch drive accessories include a 1-1/2-in, 3-in and 6-in extension, a 1/4x3/8-in adapter, a 1/4-in drive universal adapter and a 1/4x1/4 hex bit adapter
• 3/8-Inch drive accessories include a 1-1/2-in extension, 3-in extension, 6-in extension, 10-in extension, 3/8x1/4-in adapter, 3/8x1/2-in adapter and 3/8-in drive universal adapter
• 1/2-Inch drive accessories include a 1-1/2-in extension, a 3-in extension, a 6-in extension, a 10-in extension, a 1/2x3/8-in adapter, a 1/2x3/4-in adapter and a 1/2-in drive universal adapter
• Also included are two 3/8-inch drive spark plug sockets, sizes 5/8-in and 13/16-in
• Constructed of chrome vanadium steel and heat treated for strength and durability
• Knurled pattern allows for a better grip on the extension shafts
• A professional high-polish finish makes cleaning your tools a snap
• Meets or exceeds ANSI specifications and covered by our hassle-free lifetime guarantee