Dock bumpers are designed to protect the loading dock, building and equipment from impact by docking trailers. Weighing in at well over 40,000 lbs., a fully loaded trailer can cause costly damage to the dock if the shock is not absorbed by properly applied bumpers. No two loading docks are the same. You have the following links to go to from here:

Dock Bumper & Bracketing Guide Learn how to properly measure for and apply dock bumpers and bracketing.	The strongest form of loading dock impact protection! For use at medium to high use docks.
A good quality impact absorber for low to medium use docks.	An economical form of loading dock protection for low use docks.
Customized solutions to help apply dock bumpers properly.	For use in a variety of areas requiring protection.