For those who think this is a nifty little item...
...and want something similar...
Check out the Craftsman
"Dog Bone" SAE wrench on sale right now at Sears for $19.95 (nice holiday gift idea!) ... just saw it in the sales flyer that came inside yesterdays paper. An updated classic.
http://www.sears.com/shc/s/p_10153_1...2&blockType=G2
DOG BONE™ 8-in-1 Wrench. Fits 8 SAE socket sizes: 3/8, 7/16, 1/2, 9/16, 5/8, 11/16, 3/4, and 13/16 - inch. Go-Thru swivel head allows easy access and fits any angle. Built in 8-lb magnet serves as oil drain plug or nut holder. Cr-Mo Steel for strength and durability. Ideal for oil drain plugs. Triple chrome plated with full polish finish makes The DOG BONE™ easy to clean and corrosion resistant. Cam-Lock™ 6 pt. socket system provides larger contact area and will not strip bolt or nut Heads.