Passing bracket for 19mm dia. curtain pole*** 3. 3 drill bit & M4 tap required to fit this bracket to the pole *** A sleek stylish wall bracket to use on our 19mm metal curtain poles. This bracket is designed to allow our 19mm passing rings to pass over for use with extra long curtain poles where interim brackets are required, or where only a single curtain is being used. Available in our classic stainless steel, black or brushed bronze these brackets are made of superior, thick walled metal