In addition to the max fork size of 5" wide x 2" thick for the Akro-tilt® units, review your fork spacing capabilities. While the largest (2 CY) model requires a fork spread at 31.375"Φ and generally, most carriages will yeild an out to out dimension of 35" there are always exceptions. Likewise the spread for the smallest is 18.75" Φ (min 12.5" in to in) and there are larger trucks with vertical pin carriage supports that may interfere with bringing the forks that close together.