Olfa H-1 Extra Heavy Duty Cutter Knife EDC ToolMade in Japan Extra heavy duty sure grip cutter features a ratchet wheel blade lock to prevent slipping rubber grip insert for positive handle control and a rope loop. Perfect for cutting through difficult materials Features heavy gauge stainless steel blade channel that holds blade tight. Blade made from high quality carbon tool steel is produced using OLFA's precise multi step production process for unparalleled sharpness and superior edge