THIS IS THE NEWEST T4 DESIGN BLADE.Lenox 21511B118R (100/Pack) 12” x 3/4” 18 TPI Reciprocating Saw Blades FREE SHIP ...MOST OF THESE DONT HAVE THE PAINTED LENOX LOGO AS THESE WERE BOUGHT IN BULK AND ARE NOT PAINTED AS SUCH.. ALL ARE LENOX BLADES.