There are often times where you will need to have a sharp knife to cut samples of carpet or scrape stains off of hard surfaces. These disposable, individually wrapped scalpels can be used one time and packed with the evidence. FEATURES: Stainless Steel Blade, Blade retracts with one simple motion and can be permanently locked inside the handle for safe disposal, Packaged in individual pouches, Gamma Sterilized, Length of the handle is 4.9 (125 mm)