Pineider Arco Desert Beetle Limited Edition Ballpoint penArco is a limited edition of 888 numbered pieces inspired by the stunning iridescence of celluloid. The Arco material is made by overlapping alternating layers of resin in green and silver colors and joining them together with ultra high performance adhesives. The slabs of the material are then turned with an eccentricity of 4 degrees, revealing the overlapping layers and bringing to light the natural iridescence and transparency.