PART# Q2520LH Holds ramps upright for use as levelers (1 pair required per ramp, 1 left (shown) & 1 right Use chain binder with up to 3/8 chain to securely fasten stakes to trailers stake pockets Eight heights available to accomodate different trailer drops; 16″, 18″, 19″, 20″, 21″, 22″, 24″, and 26″ Getting the correct stakes is important. When using spacers, stake height = ramp width + spacer height used. Some trailers have a narrow pocket. Measure stake pocket to be sure to get correctly sized stake inserts. Stake inserts are designed to be reversed to allow for up to a 1″ difference in trailer rub rail widths