I contacted Turtle Plastic about their new Step-Cog, a twist from the standard step chock. They sent me out a pair of Step-Cogs and lock blocks. The Step-Cog offers multiple functions that add more options when stabilizing a vehicle. The Step-Cog can be used as a standard step chock, but when you flip it over it turns into more than just an oversized wedge. The flipped over Step-Cog becomes a cogged ramp that locks the wedge in place. If you need more height from the wedge, simply add lock blocks to close the gap. We plan to run the Step-Cog thru a bunch of different scenarios and have a complete product review after out HOT classes at FDIC in April.