Oregon 620-120 Hydraulic Assist Saw Chain Grinder Sharpens 1/4", 3/8" low profile, 0.325", full profile 3/8" and .404" pitch chain Includes a dressing Brick, a quick check grinding template and three grinding wheels for sharpening of 1/4", 3/8" Low profile, .325", 3/8" and .404" pitch chain(Oregon part numbers OR534-18, OR534-316 and OR534-516) Hands-free clamp vise operation for faster grinding Self-centering chain vise and customizable vise handle positioning Top plate and down angle settings