Made from triple anodized aluminum. Makes connection between any Shurhold brush to any Premium Star Brite Extend-A-Brush handle You do not need to throw away a competitive brush head with this adapater. This adapter allows using your old brush head with StarBrite's many handles. Also keep in mind most Star brite handles float whereas the competitions does not. Reverse adapter available as well.. 40135: Adapts any Premium Star Brite Extend-A-Brush handle to a Shurhold brush.. 40136: Adapts any Premium Star Brite Extend-A-Brush brush to a Shurhold handle.