The Lenox Tools 22762OSB960R Bi-Metal Demolition Reciprocating Saw Blades 9-Inch 6 TPI - 50 Pack is made for the tough job of demolition and cutting through nail embedded wood. The Patent Pending T2 Tooth Technology delivers up to 2x the life versus the previous model making demolition jobs faster and easier. The height of the blade prevents bending and provides maximum control in the toughest demolition applications. This blade has a unique tooth configuration and aggressive tang angle for faster cutting and a tapered blade shape to allow for cutting in tight areas. When it is time to tear things apart and start all over, this demolition blade gets the job done quickly.