Rage Powersports D-Shape 35.5" x 6" Rubber Loading Dock Bumper 35.5" x 6" x 5.75" Rubber bumper compresses on impact to reduce damage 4" Diameter full length through-hole void Great for truck trailer bumpers, building columns, walls, dock levelers (3) 5/8" Mounting holes with 1-3/8"D countersink Industrial quality rubber construction