A heavy duty, moulded version of the Fish safety knife design.  The 9mm wide mouth allows thicker materials and even 12mm diameter ropes to be cut safely.  Blades can be easily changed.  Available with or without a retractable hook blade, which can be set to an auto or manual retraction.  Moulded in a 'Metal Detectable' additive with 'Stainless Steel' blades, suitable for the food and pharmaceutical industries.