The O.S. #6 (A3) glow plug is similiar to the #8 plug only more economical.  FEATURES:   Hot heat range plug for most model engine applications. Works well in any two  stroke engine from .10-size to .60 Thick, solid platinum coil resists meltdowns and  premature failure Coil holds sufficient heat for a smooth idle Finest glow plug in the  economy price range No Idle Bar  INCLUDES:   One OS #6 (formerly A3) glow plug One glow plug ring 
        





                    
                            
                        
                    
                    
            
            
                
            
            
            
            