These heavy duty, durable, commercial grade band saw blades are for industrial woodworking, diy and professional craftsmen. They are the premium band for woodworking. Tooth Hardness: 62-63rc Back Hardness: 28-32rc Regular, Skip, and Hook shape teeth Raker set: left, right, straight (raker) pattern Cuts hard/soft wood, plastic, mild steel and non-ferrous metal (for machines with speed reduction). For all vertical/ stationary 2-wheel band saws.