I bought these to extend the length of my tractor bucket forks. They are not designed for that purpose but are designed to extend forklift forks. The difference is in the steel loop at the end of the extension. It's designed to go around the bottom of the forklift fork and hold the extension in place. On bucket forks, there is a bracket for a wooden upright stop which prevents this extension from anchoring the way it's supposed to. I had to bend the loop down to allow the extenions to lay flat on the forks. This worked like a champ and allowed me to PU a complete chicken coop and move it to a new location.
TerryO 
