The Starrett Duratec SFB Blade combines the best features of a flexback and a hardback into a Super Bandsaw Blade. Made from carbon steel with a flexible back, the blade is designed for contour and straight cutting and is ideal for vertical and horizontal carpentry. The blade has many uses for wood, composites, plastics, MDF, and nonferrous metals. Made from Flexible carbon steel back. Has fine tooth pitch for smooth cuts and cuts hardwood and softwood. Great for all vertical/stationary two-wheel bandsaws. Help with Blade Selection in just a few steps: Blade Length - check owner's manual for details Blade Width - Use the widest blade possible for straight cuts Radius cuts, use the following:1/8” radius = 1/8” blade, 5/16” radius = 3/16” blade, 5/8” radius = 1/4” blade, 1-7/16” radius = 3/8” blade, 2-5/8” = 1/2” blade Tooth Shape: Regular – A conventional tooth used for general purpose sawing, straight or zero rake Hook – A 10° rake angle for fast cutting of hardwoods Skip – A 0° rake angle with expanded gullet area, excellent for cutting soft woods Pitch/Teeth per inch – Choose a coarser pitch if the speed of the cut is most important. Choose a fine pitch if finish is most important