Weiler 2" Metal Adapters are for adapting medium and wide face brushes with a 2" Arbor Hole to a 1/2" Arbor Hole. Used in Pairs and Priced Per Pair. For use on CNC/milling/automatic machine, bench and pedestal grinders. Engineered and manufactured to maximize performance and minimize operating costs in the most demanding surface conditioning applications. The use of superior construction, the highest quality materials and the most stringent manufacturing processes deliver the lowest cost-of-use and most consistent performance in heavy production environments. Made in USA.