This Peterson pulley flange is machined from billet aluminum and hard-coat anodized to act as a belt guide when pressed into compatible pulleys. It fits both 1" and 1 1/4" wide pulleys, is sold individually, and requires re-drilling of the access hole after installation. The flange is specified to fit pulley part number 06-1332 and is intended for those adding belt guidance to existing Peterson pulleys.
Peterson Fluid Systems Flange Pump Pulley - Single