Rapid Tools RT00034 Retractable Utility Knife with Soft Grip The Rapid Edge &#8220;Everyday&#8221; knife has  cast metal body with a rubber over-lay providing great comfort and weight Retractable blade features sturdy slide-and-lock thumb control allowing for use at various lengths Rapid Edge knives feature the patented#1 tested serrated blade which stays sharper and lasts longer knife offers a comfortable ergonomic gripe for any hand