可更换表面雕刻图案,并能用磁铁和风枪直接更换  
                                                                                                                          
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          - For the ø10 II / IG, the o'ring is ø8x1.
 - For the ø12 II / IG, the o'ring is ø10x1.
 - For the ø16 II / IG, the o'ring is ø14x1.
 
                                                            
                            
                                                            
                            
                                                                                      
                            Which dimension has the o'ring of the inserts?
                        
                                                    
            
            




















                      
 
                  
