Plastazote block kit: 2 blocks each in the same colour and approximately 6" x 3" x 1". Plastazote is a tremendous construction material for crafting and in this special formulation, being closed cell, buoyant and medically inert, is ideal for making bodies in fly tying and buoyant lures for fishing. Easily cut with a sharp knife ('Stanley' type or scalpel); greater thicknesses can be dealt with by hot-wire, bandsaw or hacksaw.