This is a 3.2 mm replacement wheel (22 mm Arbor) for our Standard Chainsaw Sharpener (45T01.01) and Quick-Feed Chainsaw Sharpener (45T01.02). This 4.5 mm Optional Grinding Wheel (22mm arbor) will work on a variety of chainsaws. We recommend adding the optional, thinner 3.2 mm wheel so you're prepared for all your sharpening needs.
