This is the Futaba S3151 Digital Servo.                        
                 Great for a wide variety of R/C models.                       
                                                                               
FEATURES: Digital technology gives performance advantage                       
          One Ball Bearing and one Metal Bushing                               
          Nylon gears                                                          
          One year warranty                                                    
                                                                               
INCLUDES: One S3151 Digital servo with preinstalled servo horn                 
          Four Rectangular Grommets                                            
          Four Mounting Screws                                                 
          One Large Round Horn                                                 
          One Six Arm Horn                                                     
          One Four Arm Horn                                                    
                                                                               
SPECS:    Speed:  0.21 sec/60° @ 4.8V                                          
                                                                               
          Torque:   43 oz-in  @ 4.8V                                           
          Dimensions:  1.6 x 0.8 x 1.4 in (41 x 20 x 36mm)                     
          Weight: 1.5oz (42g)