M.K. MORSE Master Cobalt Reciprocating Saw Blade (50 pack) 8" x 3/4" x .050" 10/14 TPI (teeth per inch) Applications: Heavy gauge metals of 18 gauge to 1/8" thick, conduit, pipe, channels, and tubing. 8% Cobalt blade edge provides better wear resistance Fits all popular reciprocating saw machines Morse# RB8501014T50 Made in USA New in Factory Packaging Buy it Now is for 50 Pack of Blades