Featureā—¸Lenox reciprocating saw blade 6tmatrix ii type alloy high speed steel with 8% cobalt cutting edge. Shatter resistant blade and shock resistant precision milled teeth. Tuff tooth technology for smoother feel, faster cut, longer blade life and reduced blade strippage. Universal shank.Description Lenox 20587-S956R 9" 6 TPI Multi Purpose Bi-Metal Reciprocating Saw Blades