This part will help protect your equipment from the metal-on-metal contact at the ends of your spotter arms.
This design is compatible with the PRx Profile One spotter arms. The Profile One arms are about 2" wide at the end.
Sold as a pair.
1. Slip the protectors on from the side of the spotter arm. They will stay in place with friction. You can optionally use hot glue inside for a firmer mount.