The Flying Dutchman New Spiral Five Dozen Scroll Saw Blade Variety Pack includes one dozen of each of the following blade sizes: #3/0, #2/0, #1, #3, and #5. The newly designed New Spiral blades are an excellent spiral blade. With teeth down both sides of the blade and then twisted, it gives a smoother cut than regular spiral blades. Flying Dutchman scroll saw blades are 5" long and are pinless. They are all milled blades, which makes for a sharper cutting edge. Flying Dutchman blades are manufactured in Germany with top-grade, high-quality hardened steel.