Giesser Professional Tomato Knife 4.25 inch Serr: Giesser are one of the world's leading manufacturers of knives & accessories for professional use: Features ergonomic rubber thermoplastic handle with built-in slip resistance. Protective guard prevents hand from slipping. Blade has consistent performance and can be resharpened again and again. Designed for the high demands of the butcher market but with professional chefs in mind.