Dremel 1453 Chain Saw Sharpening Attachment. Includes; Chain Saw Sharpening Attachment, 453 5/32 inch Sharpening stone, 454 3/16 inch Sharpening stone, 455 7/32 inch Sharpening stone, Gauge, Spacers, Wrench, and Instructions. Quickly and easily use your Dremel rotary tool to sharpen dull, slow-cutting chain saw blades. Includes three different sharpening stone sizes to fit most blades. For areas without convenient access to electricity, Dremel recommends using this attachment with the 10.8V Lithium-ion Cordless rotary tool. The sharpener attaches easily to most rotary tools. Enclosed gauge, spacers and 30 degree angle guide assures custom fit to most chain saws. Three sizes of sharpening stones fit most blade sizes. Fits Dremel Rotary Tool Models; 400, 398, 395, 300, 285, 275, 800, 780, and 770.