Reducing Bush Available in sizes ¾" x ½", 1" x ½", 1¼" x ½", 1" x ¾", 1¼" x ¾" and 1¼" x 1" This black malleable iron reducing bush is designed to connect two threaded fittings or pipes of different sizes. It allows you to step down pipe diameter while maintaining a strong, secure connection. Ideal for adapting pipework in furniture builds, shelving frames, and industrial-style installations. Common uses: Size transitions in pipe frames, shelving structures, and custom builds.