A radically different 1.5 inch thick endurance knee slider for racing suits that's constructed from German Birchwood. These endurance pucks are a half inch thicker than standard and last 2x longer than the competition. Compared to a traditional plastic knee slider, the endurance MOTO-D Wooden Knee Pucks have a smoother sliding feeling. They are the top choice amongst thousands of racers in Europe now in America. The pucks are set on a top quality genuine leather backing and utilize super strong velcro, glued and sewn. Sold in pairs.