The Next Generation Wrecker is designed for Multi-Material demolition cutting. This means it has the capability of cutting nail embedded wood, plastics and a variety of metals. This blade has 25% more high speed steel for increase life and durability. With all of these features, the Next Generation Wrecker is a true demolition blade for the professional user. The Milwaukee 48-00-1706 contains 10 blades. Optimized to be a true demolition blade for cutting nail embedded wood, plastics and metals Hardened teeth for increased life in nail embedded wood and thick metals 7/11 TPI for a wide material variety to be true demolition blades New blade profile with the ability to bend and maintain its shape Nail protecting feature built into the tooth design Aggressive tooth and blade design for increased speed in woods and metals Blade profile optimized for fast plunging Includes: one 48-00-1706