Thread adaptor for use with 3M Superbuff double sided polishing pads. The 3M adaptor has a specially designed short 5/8" 11 male thread which does not protrude through the polishing pad avoiding scratching. Available in imperial and metric versions to fit male connectors on metric M14 polishing machines (3M 05512) or imperial 5/8" 11 polishing machines (3M 05710).