Review on Mount-N-Lock SafetyStruts Heavy Duty RV Bumper Brackets (1SSNHD by Nolan White

I did some research and ordered the correct type for my 2007 Rockwood trailer. Following the instructions I used a clamp and jack to ensure a full seat to the bumper. I didn't use the screws that came with it, instead I bought some good quality coated screws, washers and nylon nuts, 4 per bracket. The bumper doesn't seem to be going anywhere. There are only three screws in the kit, and they are self-tapping screws. Drilling was easy because the cross section of the main frame guide was quite thin. I felt like there weren't enough threads to hold the included bolt thread, so I reduced one sprocket to a total of four