Revolution Ladder Model 17The Little Giant Revolution is constructed of a special alloy making it 20% lighter than any comparable industrial rated ladder. The Revolution ladders also include new innovative features such as the Quad Lock hinge and the easy to use Rock Locks for quick adjustment. The Revolution Model 17 can be used in 24 unique configurations: an A frame, extension, staircase, and 90 degree ladder, to name a few. You can even convert it into a scaffolding system