There are many different wiper arms types on different vehicles.Some vehicles with same wiper arms, just like most of Japanese car makes, they are j hook wiper arms or u hook.
Now,let's share you wiper arm type with detail size.
U hook wiper arm, 8.7*7 mm, 9*11mm, 12*11 mm
P & H side pin wiper arm
PTB wiper arm 16mm
New PTB wiper arm 19mm
Insert wiper arm
Lock wiper arm
Renault wiper arm
Mercedes Benz wiper arms
As for how to install wiper blades, how to fit wiper blades, please watch the video on Youtube, please click the photo.