The special blade shape is designed for comfortably and effectively cutting in horizontal position. Hardened stainless steel blades. Counterblade with non-slip serration. Polypropylene covered handle. Centre screw with self-locking nut. Metal catch. This very unique blade was designed for cutting in a horizontal position, so that your hand and fingers do not bump against your supporting surface generating an obstruction to the cutting action. Your wrist will also have a more natural and restful position.This model is recommended for upholsterers.