Oregon Vitrified Grinding Wheel for sharpening Chainsaw Chain, for 3/8 in., 0.404 in. and 0.325 in. Pitch Chain OR4125-316A OR4125-316A - The Home Depot
Diamond Grinding Wheel: 3/8" and .404" GB1115 – HarvesterBars.com
2 in 1 Filing Guide & Saw Chain Sharpener | STIHL USA