The Wiremold Walker 825CK-1 Brass Conversion Kit is a unit designed to convert a 2-1/4 inch opening to a 1 inch opening. Made of brass, this kit is part of the 800 Series by Wiremold, a trusted brand in the industry. This conversion kit is specifically designed for use in electrical equipment and supplies, making it a reliable and durable solution for commercial and industrial applications. With its quality materials and precise dimensions, this kit ensures a secure and efficient conversion for your electrical needs.