CPBP CRS Binding PostCardas Patented Binding Post (CPBP) with short, rhodium over silver plated binding posts A single unit consists of a single knob, the top clamp, two posts, the base, and a 1 4 28 allen bolt. One Pair is required per speaker. Two pairs are required for two speakers and so on.. Designed as an OEM system, Cardas CPBP CS Binding Post can replace most stock binding posts. A single knob tightens both leads of the connected cable at the same time, without