Grade A natural rubber has 30% longer life time.middle spoiler design make it scrap better.8pcs patent adaptors make it fit more than 97% cars:
1)U-Hook wiper blade arms: 8.7mm*7mm
2)U- Hook wiper blade arms 9mm*11mm                          
3)Side pin &Side Lock arms,2 different style                                                         
4)Push button                                                                                
5)Pinch&Pinch tab                                                                                     
6)Bayonet                                                                                     
7)other special arms:Renault type,Audi A6L,A8 type etc