Ergonomic roofing knife. 3 1/2'' high-carbon steel, heat-treated, tempered, ground, polishes and sharpened. Cutting edges on both sides. Ergonomic rubberized handle maximizes grip and reduces hand fatigue. Broad hilt design gives total hand protection. Recessed curves allow maximum pulling action. Recessed angle allow maximum downward pressure. Cuts roofing paper and more.