KwikTool USA BBC450 Bad Blade Carver 4-1/2" 6 Tooth With 1" Arbor And 7/8", 5/8", And 20mm Reduction Rings "Bad Blade Carver" 4.5" 6 tooth with 1" arbor with 5/8" reducer New Patented blade concept comes from Europe where they have been usingtheseblades in angle grinders for years for working withwood . Ingenious, with specially designed toothlayout, set and reinforcement which give ourtungsten carbide blades their awesome cutting ability with NO Kick-Back Ripsand cuts and carvesall types ofwoods, laminates,plastics, fiberglassandcomposites all with NO Kick-back Functional and time savings by using your angle grinder for beam notching, utility cut-outs, trimming, cut-off and more with NO kick back!