These models are specially made for the category where buoyancy, strength and stability (at a good price) are important. These heavy duty models also have a bolt and nut fixing system. Space has been reserved to fix the floats with a crease, but also to grind the bolts, both with a small and a large grinder. The chamfered edges provide additional strength and optimally distribute the forces. Additional water drains ensure that rainwater can drain away quickly.

The outer diameter of 1950 and the length of 700 mm are ideal for transport in both 20-foot and 40-foot containers.