These Microplane Rasps are excellent tools for shaping swallowtails, wings, stingers, chamfers, and other unique details. The Microplanes stainless steel, razor sharp tools do not tear the foam or wood. Instead, they leave a clean, smooth finish. The handle design allows reversing the blade to cut when pulling or pushing. This kits come with three replaceable blades; flat,rounded, and an angle version. All blades are 8″ long.