Needed to replace old Blum surface mounted hinges that were breaking and creaking. Whilst they are not a direct replacement, the mounting holes are in different position, I was able to calculate where they should be mounted, not an easy task. However they are sturdy and there is enough adjustment to correctly align the doors. These surface mounted hinges are far more expensive than the normal side mounted (as found in kitchens) and rarely used these days, I was just glad they are still available so the bedroom furniture remains in good order.