Powerful and detachable! SECURE POSITIONING ON THE MOUNTING SURFACE; This makes it one of the few locking blocks that can be used with removable fasteners. https://www.amazon.com/gp/aw/d/B003OK4ZM2/ The extra width of the front crossbar and the thick construction of this pad make it the best option: These non-locking, tubular, removable pads don't provide enough confidence and security when towing a motorcycle. The only other option available is the universal ratchet key which you will see on Cargo Haven/eBay/anywhere else; However they must be installed with 4 plastic washers and carriage bolts as the base plate has beveled edges and a gap at the bottom so they cannot be installed with removable fasteners. I paid about $60 for this pad and another $9 for the replacement pad. gear and now I can remove it and use my 4x8 trailer more often without the bulky padding taking up the front 1/3.