Playsafer Rubberecycle Dock Bumpers are thick and durable enough to provide protection for virtually any size boat or wave runner. They are also great for protecting loading docks and parking spots. Each bumper weighs 13 pounds…most bumpers weigh a mere 1-3 pounds! Easy installation. 3 holes for mounting are provided. Can be mounted directly to the piling or dock. Any stainless or galvanized 3/8” thick x 6” or 8” length will work. A rubber plug is provided to conceal all hardware to provide a seamless and professional installation with no protruding hardware. No other marine bumper compares. We challenge any other marine bumper in the world to meet our thickness, durability and protection. All of this in an environmentally friendly product. 100% recycled rubber. Your boat, dock and the environment will all thank you.