Blades are made of a special steel for cutting hard and soft wood, wallboard, fiberglass reinforced materials and various soft plastics. Especially designed for sawing tight curves and guaranteeing clean cuts. Dimensions: 2 1/4" x 7/64" x 1/64" (57 x 2.9 x 0.5 mm). Tooth pitch 1/16" (1.5 mm). Teeth are alternately set and sharpened. (Recommended for gourds) 2/pkg.