The RT-201 Triangle Rail Threader is used by rail gangs to lay or remove continuous welded rail. This universal Rail Threader is used on all sizes or welded rail. There is ample clearance within the opening of the Threader to accommodate some bolted rail. The RT-201 Threader side opens in two ways for easy rail loading. The heavy-duty construction allows the Threader to roll the rail upright and thread the rail into the tie places. The replaceable tapered roller bearings equipped with grease seals are inside of the rollers for protection and extended life.