Prime-Line 2.8 in. H X 2.8 in. L Brass-Plated Brass Steel Bore Reducer

These bore reducer rings are constructed from stamped steel and come plated in brass. They allow 1-1/2 inch and 1-3/8 inch lock cylinders to fit into a 2-1/8 inch diameter bore. Comes with everything you need for a quick and easy installation.