New! Never used still in original case. (sold my 12-inch table saw before I could try it out) Freud says: This (Freud SD510 ) 10" Super Dado Set with 1 inch arbor is for 12 inch table saws with a 1 inch arbor and is the perfect tool for cutting slots, grooves, dadoes, and rabbets in hardwood, softwood, and other materials. This set features Hi-Density carbide for maximum performance and longevity. Ideal for all woodworkers looking for precise and clean dado cuts, it delivers clean edges, square shoulders, and flat bottom grooves with virtually splinter-free cuts. Designed for precision, adjusts in .004" increments, giving you the ability to fine-tune the groove width. The set comes with 2 blades, 6 chippers, a shim set, and a carrying case for easy storage and transportation. The Silver I.C.E. coating prevents build-up, keeps the blade cooler, and reduces friction, while the anti-kickback design ensures safe cutting. Perfect for use with table saws, portable table saws, and radial arm saws.