MK Morse 8% Bi-Metal Recip Blades Extra-tough, professional quality bi-metal reciprocating saw blades are available in a wide variety of lengths. Over the years we have developed and refined a special manufacturing process designed to lengthen blade life and guarantee quality. MKM-RB618T50 6″ x .035″ x 18 tpi Bi-Metal Reciprocating Blade – 50 Blade Pack Features & Benefits of the Morse 8% Cobalt Bi-Metal Blade: Fits all popular reciprocating saw machines 8% Cobalt edge offers more wear resistance Matrix ll cutting edge has shock resistance teeth that resist strippage Available in a wide variety of lengths and thicknesses      This is a Pack of 50 Saw Blades    Made in the USA