Retail Packaging Purple 7 1/4 Razor Sharp Super-hardened Surgical Stainless Steel Blades With One Serrated Edge To Cut Through The Toughest Materials Blades Tempered To A Rockwell Hardness Of C56 For Unsurpassed Durability Contoured Polypropylene Handles With Large Ring Provide Maximum Control And Comfort Extra Large Rivet With A Rated Strength Of 88kg Assures Rugged Durability Fully Auto-clavable To 143c (290f) Inspected And Packaged In The U.s.a.