Diablo, 10 pack, 9'' x 8tpi, carbide tipped thick metal steel demon reciprocating blades, designed for extreme metal cutting, including high strength alloys, cast iron & stainless steel, high performance carbide tipped blade delivers unmatched 50x longer cutting life, extreme thick metal cutting applications between 3/16" to 1/2", increased blade body height produces straighter cuts with less vibration.