I purchased this a while back for my guitarist to use on his head case. Unfortunately, it wouldn't work with the angled aluminum on the case (wouldn't sit flush). Would probably work with a Walkabout Scout, Markbass CMD 121H, an extension cabinet or something along those lines. Asking $30.00 shipped in the CONUS. Thanks.
Here are the specs:
Square Tube Assembly
Push-Button Release - 3-Stage Tube Set
External Mount Systems Includes 13'' Wheel Assembly, Front Foot and Spacer Bars
Locks Open and Closed
Square Aluminum Tubes - Black Finish
Black Plastic Handle
Black Double In-Line Skate Wheels - Steel Bearings
Overall Retracted Height From Wheel Base - 24.45''
Overall Extended Height From Wheel Base - 44.41''
Wheel Base Width - 13.23''
Base Platform Width - 8.03''
Overall Height Can Be Cut Down By 6.25'' http://www.reliablehardware.com/exte...ssembly-1.aspx
A couple stock images (I'll snap some when I get home):