The arms I used were listed as jeep YJ. They have a little rod that prevents the spring action from closing while not on the vehicle. Once i put the arm and blade onto the wiper motor shaft, I pulled the arm up a little and removed the pin. The spring then latches onto the shaft and the arm is pushed onto glass. I used them another truck as well as this one. Fit is snug. I honestly don't use them too often though, so in regards to daily driver kind of use, I do not know how that would turn out. But I couldn't physically pull them off by hand.