The MINI-PLUS B fits in between the 4th and 5th section of the Reach-iT MINI. It is an 8ft 4" extension which, with PLUS A, extends the MINI to 42FT, or 47ft reach!
It is a Core Rigidity Extension. The taller the pole is, the more stress gets applied to the middle sections of the pole. Adding a high modulus extension increases the rigidity at the core while extending the reach of the pole.
With the MINI-CONNECT, turn this extension (and other MINI-PLUS's with it) into a modular water fed pole.