Simplified to support your backyard and garden projects and giving your go-to tools a new lease on life. The A679 Sharpening Kit includes everything you need to keep your favorite gardening tools looking sharp. The Dremel Sharpening Kit includes three of our most-popular attachments to easily sharpen the dullest of chains and blades while providing the optimum sharpening angles. Compatible with Dremel tool models: 100, 200, 3000, 4000, 7760, 8220, 8240, 8250 and 8260. Also fits onto the Dremel 4300 when used with collect and collect nut. Kit includes Garden Tool Sharpening attachment (x1), Lawn Mower Sharpening attachment (x1), Chain Saw Sharpening attachment (x1), Sharpening & Grinding Stones (453, 454, 455, and 932), wrench, gauge, and spacers (x2) The 453, 454, and 455 aluminum oxide chainsaw sharpening stones are ideal to sharpening 1/4", 3/8", 3/8" low profile, and .325" chains Simple to install, the attachments easily screw on to your rotary tool