Portwest Pro Safety Cutter - Kn20 | KN20 | Silver Made from zinc alloy for toughness and durability the Pro Safety Cutter is suitable for both right and left handed users. With a top blade control slider and an automatic blade retract system this knife has been designed to ensure your safety.Retail boxRetail tagRubberised gripBlade retractsSuitable for both right and left handed usersMade using zinc alloy GBP 4.40 1