Profile: Gilbert & Riplo Co., Inc. specializes in positive drive rubber tracks. The Griptrack set fits virtually any combine, uni-harvester, tractor, chopper, or other self-propelled equipment on the market. The back side of Griptrack drive sprocket is machined out to fit over the axle of the final drive. The double set of mounting holes and adapter rings assures versatility on many machines. Griptrack's 30" and 36" widths minimizes compaction. Its 42 square feet of bearing surface on the ground guarantees that you will stay on top of most soils. This prevents slippage and saves wear and tear on the final drives.