The Concealed Blade Safety Knife has a protected blade channel design that allows for continuous blade exposure with for demanding, repetitive cutting jobs. The innovative 4-point blade design delivers four cutting points on a single-edge blade for high blade productivity. The Concealed Blade Safety Knife comes pre-loaded with an OLFA® SK-10 carbon tool steel blade designed with a single-edge for safer handling. This knife handle is made from impact-resistant Nylon 6-Polyamide and is ergonomically contoured for user comfort. The unique thumb-rest and anti-slip grooves provide a stable grip. A built-in stainless steel tape slitter adds functionality and helps increase blade life. Easy, tool-free blade adjustment and change. (SK-10, #1096854).