Harley Benton Fingertrainer
                                
                                
                             
                            
                         
                            
                            
                        Harley Benton Fingertrainer, Finger Trainer, Training for strength and stamina of the fingers and the hand, Individually adjustable pressure resistors enable individual training for each finger, Dimensions: 87 x 68 x 23 mm, Weight: 74 g