Three 26" x 2.1 Schwalbe "Ice Spiker" tires for sale. Used, but in good condition. Asking $75 each tire. Below is info from the manufacture...
Stay in control on icy roads with the Ice Spiker tires from Schwalbe. Light, grippy, and fast, this studded winter tire gives you traction and bite on ice, snow and slush. Each tire has 304 spikes each with a toothy tungsten carbide core, clad in weight-saving aluminum. A Kevlar Guard belt protects against penetration punctures, while only minimally increasing weight and rolling resistance.