Zr02 ceramic safety blade, thickened blade, classic rounded tip design to avoid accidental injury, suitable for novice users. Innovative new material – Zr02, hardness comparable to masonry, creating a true safety knife. Washable with confidence, non-corrosive and non-rusting, non-conductive, sturdy, and durable. Push and twist automatic rebound, safer and more convenient. Suitable for handcraft, logistics warehouse, home office, and other occasions applications. Made from abs material, measuring 6.14*0.4 inches, this custom auto rebound ceramic knife.