I ordered the Delta 37-365X Jointer and a set of knives for back up. When the knives arived, they were not in a Delta box and Delta's name/part number was not printed on the knives. I call Amazon and requested a second set, no-luck, same set was sent again. I returned the knives, and ordered a set from Delta direct. I feel, to keep equpment running safe and trouble free, buy orgenal parts only, not copies.