Product review (4 stars): Love the product, hate that I needed to buy it
The product itself is perfect replacement for the bottom rack of my Bosch 46db dishwasher, the wheels snap right in on the sides of the rack.  The design of the Bosch rack and the rails is less meritorious however, the fact that the rack (with all 8 wheels) has such a predilection to jump the rails is probably what caused us to lose the wheels in the first place.  Where the wheels went within the hermetically-sealed interior is a genuine mystery that is beyond the scope of this review.  In any case, 8 wheels work much much better than 6 wheels so I'm happy I made the purchase.