A HB series end cap pontoon, intended to be used both as front and rear float. If used as a rear pontoon, it is just flipped upside down, however mounting principle stays the same for the ease of assembly. Pontoon helps to lower the resistance of a pontoon vessel in water if both front and end of the pontoon row is capped. Two  pieces as fronts could be used to form multidirectional row for special type vessels.

Pontoon HB-FR