The 4-1/2-inch 36-Tooth Fine Finish Saw Blade has a PTFE nonstick coating and an anti-static coating to resist gumming, heat buildup, and corrosion. This blade is made of German Tool Steel and every part of this blade is laser cut, creating the perfect flat blade and extending the saw's battery life. The razor sharp industrial hi-density carbide, extra thin kerf, and three-layer braised carbide adhesion process all make for a thin fine cut, extending the blade life up to eight times longer and prolonging the battery usage. The ATB grind is perfect when cutting a smooth fine finish, ripping, and cross-cutting fine woods, plywood, and wet lumber. The arbor has a 3/8-inch brass reducer ring that fits into the standard 20mm. This blade can be run up to a maximum of 14,000 RPM's on a corded or cordless handheld saw or compact circular saw.