Hook Type
1:Press the U-clip onto center rivet
2: Insert the wiper arm through the blade hole, pull it back so it hooks over the U-clip, Pull on the wiper blades until the projection on the clip snaps into the wiper blade hole
Bayonet Type
1: Press the adaptor onto the center rivet
2: Insert the arm under holder until the projection on the arm fits in to the hold in the holder.
3: Continue pressing the blade until it is all the way in.
Pin Type
1: Pull up the stopper on the connector
2: Insert the pin on the wiper blade into the hole in the end of the arm until you can see the pin protrude from the other side
The detail replace & install wiper blades, please kindly visit the video on YouTube. https://www.yjwipers.com/About-Us/Video