Lenox 6" x 3/4" x .035 24 Tooth Bimetal Reciprocating Saw Blade is designed for cutting metal, including galvanized pipe up to 18 gauge. It has a reinforced tuff tooth design that provides longer life and durability. The blade is made of bi-metal, which is a combination of high-speed steel and alloy steel. This combination provides the blade with the strength and durability needed to cut through metal. The blade has a 1/2" tang size and a 24 TPI (teeth per inch). It is 0.035" thick.