Encased in an outer covering of elastomeric skin (up to 5/16" thick material) plus a urethane skin base, the Jim Buoy Giant Marine Fenders are extremely resilient and able to flex with the rigors of high energy berthing over and over again, providing the user with extended service under all conditions. All models may be mounted vertically or float horizontally All models feature a 1-1/4" thru-hole that provides easy access for tethering High resistant to abrasions and punctures 12" Diameter x 36" Length Black