Mercer Industries 728001 48-Tooth Professional Grade C-6 Carbide Blade, 1 Blade The Mercer Industries steel Thunder line of metal cutting Carbide blades are for safe, clean metal cutting. Carbide blades last 30 times longer than an abrasive Blade and cut 5 times faster. They also eliminate dust and sparks that are associated with abrasives. Steel Thunder blades are designed for metal cutting saws and can be used on all types of mild steel including steel studs, steel sheet, steel pipe, channel iron, threaded rod, square tube, angle iron and more. One 8" blade with a 5/8" arbor for cutting mild steel TCG Tooth configuration. Professional grade C-6 carbide. Tensioned and harded steel plates for burr-free, accurate cuts Use on a circular saw. Max RPM 5, 800 A safe, clean way to cut metal - no sparks and the work piece stays cool. Can be sharpened 2-3 times