We have redesigned our short No.4 and No.6 sections making them 50cm long. These short sections will stiffen the action of your pole. If you replace a full no.4 section with a Mini Plus no.4 and a Short no.4 you can break down half way along the kit – at section 3.5- which is handy when the depth is just too much for a standard no.3 but not enough for a full 4.