DEWALT premium metal cutting blades have a proprietary coating and preparation process that provides 2X longer life vs. standard DEWALT blades and metal cutting competitive blades. The variable pitch 14/18 TPI unique back angle geometry provides the most efficient cutting performance even in hardened materials. They have a 1 In. tall blade body and .042 In. blade thickness making them wider and thicker blades for added durability and to prevent bending and breakage. These blades are idea for cutting rebar, angle iron, black pipe, conduit, cold rolled steel and other metals.