10 pack of Reciprocating Blades - for Hard Metals New from MARATHON , the most trusted name in sawblades! This is a 10 pack of 6" 18TPI top quality AMERICAN MADE reciprocating sawblades which are excellent for cutting hard metals, even those that are thicker than 3/32". This is a true bimetal metal-cutting sawzall blade! This long life blade will flex & bend for you, but it wont snap at the holes like other brands. These top quality American made blades are the best available quality. They are meant for the professional.