Choices Available : 
Type A:
Size : For Mounting Front 160mm / Rear 140mm
▪️Fitting : IS Mount (B) Pillar 
Type B :
▪️Size : For Mounting Front 180mm / Rear 160mm
▪️Fitting : IS Mount (B) Pillar 
Type C :
▪️Size : For Mounting Front 203mm / Rear 180mm
▪️Fitting : IS Mount (B) Pillar 
Type D :
▪️Size : For Mounting Front or Rear 180mm
▪️Fitting : Post PM (A) Pillar 
Type E :
▪️Size : For Mounting Front or Rear 203mm
▪️Fitting : Post PM (A) Pillar