We have had a few customers with fitment issues using Harbor Freight PN 58816 with our benders. This appears to be due to the rams having inconsistent lengths on the clevis that mounts the ram into the bender. Below are images showing the correct spacing, and a ram that is too short. If you are planning to use this ram, we recommend measuring the clevis length in store before purchasing to ensure correct fitment in your Rogue M600 series bender.