The Peterson mandrel guide washer is a billet-aluminum washer intended for mandrel and drive pulley setups, measuring 2.25 inches outside diameter, .125 inches thick, with a 1" center hole. Machined from billet aluminum, it serves as a guide to maintain concentric alignment and spacing on mandrel shafts and pulleys where a 1" bore and precise thickness are required for proper assembly.
Peterson Fluid Systems Mandrel Washer 2.2 OD 1 x .125