D rubber fender are called marine sem-circular d rubber fender. D fender own higher energy absorption than cylindrical rubber fenders among whole marine rubber fenders fendering system. Due its smaller bottom contact area, d rubber fenders are more suitable for frame type wharfs and shipboard protection.
There are holes drilled on D rubber fenders, they are easier to be installed with Bolt, Nut, Pressing Boad, Washer etc.