Master Mechanic, 8 Coarse GritEdge, Reciprocating Saw Blade, 12 Shank, Scroll, Constructed Of Heat Resistant Steel With Tungsten Carbide Particles, Eliminates Premature Dulling Versus Conventional Blades, Cut On The Push Pull Stroke For A Smooth Clean Finish, Designed To Cut Fiberglass, Ceramic Tile, Laminates Composites, Clamshell Package