The 8" Stacker Foam Block can be purchased as a single replacement, or, in multiples for the "do it yourself" paddler that is creating their own set-up. Sold in singles. Note: Safe kayak transport requires two blocks.
EVA foam block provides UV resistance and anti-tear strength
Large top radius cut-out fits most kayaks (on-side)
Universal bottom cut-out fits round, square and most factory oval load bars