Check the listing for details. Tarp Keepers For Hooper Bottom Grain Trailers. Condition: New. Listed at 59.95 USD. Tarp Keeper Cords made of nylon that permanently mounts to sides of your trailers and goes on top of our roll tarp. Installation takes only a few minutes. The Tarp Keeper Cords helps in case the wind catches your tarp during the rolling process, allowing you to safety roll the tarp. This will also help reduce issues like bent poles, holes in your tarp and of course loss of revenue due to down time for repairs. The material used to make Tarp Keepers won’t scratch or harm your trailer but will save you from the wind that frequents many areas. All materials used in the making are U.S.A. made. Most Trailers will use 2 or 3 cords ship to lower 48 statesTarp Keeper Cords made of nylon that permanently mounts to sides of your trailers and goes on top of our roll tarp. Installation takes only a few minutes. The Tarp Keeper Cords helps in case the wind catches your tarp during the rolling process, allowing you to safety roll the tarp. This will also help reduce issues like bent poles, holes in your tarp and of course loss of revenue due to down time for repairs. The material used to make Tarp Keepers won’t scratch or harm your trailer but will save you from the wind that frequents many areas. All materials used in the making are U.S.A. made. Most Trailers will use 2 or 3 cords ship to lower 48 states