8% Cobalt for long cutting life and resistance to heat and wear. Need a heavy duty metal blade? 0.05" thickness provides the increased rigidity for bend resistance and heavier feed pressure. Straight tooth pitch gives a smooth cutting action. Fits all standard reciprocating saws including: Dewalt, Milwaukee Sawzall, Makita, Bosch, Skil, Ryobi, Hilti, Porter Cable, Ridgid, Craftsman, Hitachi. Pack of 10