DEWALT DWA4186 6-Inch 14/18TPI 2X Max Metal Reciprocating Saw Blade (5-Pack) Proprietary coating and preparation process provides 2X longer life vs. standard DEWALT blades and metal cutting competitive blades Variable pitch 14/18 TPI unique back angle geometry provides the most efficient cutting performance 1" tall blade body and .042" blade thickness wide and thicker blade for added durability and prevents bending and breakage Idea for cutting rebar, angle iron, black pipe, conduit, cold rolled steel and other metals