5 Pack, 8", 14/18TPI, Metal Reciprocating Blade, Proprietary Coating Provides 2 Times Longer Life, Variable Pitch 14/18 TPI Unique Back Angle Geometry Provides The Most Efficient Cutting Performance, 1" Tall Blade Body & .042" Blade Thickness Wide & Thicker Blade For Added Durability & Prevents Bending & Breakage.