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 3.2 mm Optional Grinding Wheel (22mm arbor), which is thinner, may work better on the smallest chainsaws. We recommend adding the optional, 4.5 mm wheel so you're prepared for all your sharpening needs.
