SklarSafe Safety Scalpel, Sklar. Sharp, Curved, Blade, #15, Stainless Steel / Plastic. The SklarSafe Non-Sterile Safety Scalpel #15 features a protective, transparent sheath that can be opened, closed and locked with a single hand. The sturdy, in.sure-grip in. handle provides an audible in.click in. when the sheath is advanced to a locked position. These non-sterile safety scalpels are available in a case of 500.