Orbit ball bearing blocks boast the highest strength to weight ratio available - All composite reinforced polymer materials and multiple attachment options - Optimum number of ball bearings for minimum friction - Safe Working Load 250 kg, sheave diameter

A platform for mounting fish finders or chart plotters with square or round bases, making them Easily removable - All that remains on the deck once it's removed is a low profile Railblaza mount - This 3 axis mount has friction joints top and bottom featur

Watertight installation - Easy and Reliable Installation - No need to remove cable connectors - Multi-functional Dome shape

Perfect for lights, fans, pumps, etc.Sealed for protection against the water Seachoice