These Milwaukee SAWZALL blades are a general purpose blade for cutting metal. It is suitable for cutting 1.5-4mm wall thickness metal, Cu, Ni, Ms, Zn, and stainless steel, 10-160mm diameter of metal tube. It is 230mm in length and 18TPI. Packed in five's. They are fitted with a 1/2" universal shank which can be used with the following brands, AEG, B&D, Bosch, DeWalt, Fein, Flex, Hilti, Makita, Metabo, Milwaukee, Porter Cable, Ridgid, Rothenberger, Ryobi, Skil. Made from Bi-Metal blade with 8% Cobalt. General purpose blade for cutting metal. 230mm in length. 18TPI. Pack of 5.