These products appear to be very high quality. I popped open the air locker and took a look at the internal components. The spider gears look great, all pieces are smoothly machined. the only slightly rough edges I could find were near the ring gear mounting flange bolt holes. I did a lot of research on HF brand lockers/products before making this purchase and I am not disappointed. All three of my packages arrived in exactly two weeks from the date of purchase. So far everything has been great. I am currently in the middle of installing them in my jeep, but I am confident they will work excellent