This is the No.1 Precision Knife with 5 Replaceable #11 Blades from X-Acto.  
                                                                               
FEATURES: X-Acto blades are extremely sharp!                                   
          Type A, all aluminum handle designed for in-the-hand comfort.        
          Textured handle provides for a firm grip, balanced for control in use
          The #11 Classic Fine Point Blade is precision-crafted of the         
            highest quality carbon steel with hard, sharp points and finely    
            honed cutting edges. It's designed to handle a variety of tasks.   
          Used for delicate, precision cutting, trimming and stripping such    
            items as: paper, plastic, balsa, thin metal, cloth, film, acetate. 
          5 additional blades within a plastic storage case.                   
          Other blades that will fit this handle are: Straight Edge, General   
            Purpose, Precision, Mini Curved Carving, Micro Saw, Scoring, and   
            Lightweight Chiseling.                                             
          Comes in carded packaging.                                           
                                                                               
INCLUDES: One No.1 Precision Knife                                             
          Five #11 Classic Precision Blades                                    
                                                                               
SPECS:    Handle Length: 4-3/4"  (12cm)