Seems like a good deal but they don't fully disengage causing automatic seizure. Eventually I will replace them. I wish I could return them when I had the time. ** UPDATE ** In less than 6 months one went down completely and the other still won't turn off. I tried to contact the company about a warranty claim/return. I can't even call. Complete garbage. Revain really needs to start looking at some of these parts suppliers. Some of them are just cheap chinese junk with fancy marketing. Stick to quality supplier and quality part.