This checking ball can be pulled into a hole without applying pressure on the ball. This is done by using a cap screw in the tapped hole in the shank.
                    Unit of Measure
                    
               
        
            
                                                                                A | 
                                                                        N/A 0.5000 | 
                                                                                B | 
                                                                        N/A 0.3125 | 
                                                                                C | 
                                                                        N/A 0.2409 | 
                                                                                D | 
                                                                        N/A 0.9600 | 
                                                                                Country of Origin | 
                                                                        N/A US | 
                                                                                Warning | 
                                                                        N/A Prop 65 Warning: This product may contain chemicals known to the State of California to cause cancer, and birth defects or other reproductive harm. |