When you own a boat you want to make sure that you treat your investment properly so that you can enjoy many outdoor activities in it. One of the most important things is to make sure that the rollers on your trailer are correct and set in the right position. Don't strain your back trying to get your boat off your trailer anymore, there is a wide variety of boat rollers and accessories by Ark that can make life alot easier. BLACK ROLLERS - are standard, budget rollers that are soft and suitable for alloy and fiberglass boats. RED ROLLERS - are made from hard wearing polyurethane and will outlast conventional rubber rollers. they are less abrasive and reduce hull marking, making them ideal for fiberglass boats. BLUE ROLLERS - are had poly rollers, they are hard wearing and will outlast conventional rubber rollers. They are less abrasive and reduce hull marking but due to their hard construction they are ideal for aluminium boats.