Simplified to support your backyard and garden projects, Dremel's 3 piece Chainsaw Sharpening set is what you need to keep your chainsaw and gardening tools looking sharp. The set is ideal for sharpening chainsaw blades, quickly and easily. The kit includes 3 aluminum oxide sharpening stones that are ideal 1/4-in, 3/8-in, 3/8-in Low Profile, and 0.325-in chains. Use with the Dremel A679 Chain Saw Sharpener attachment is recommended.