Bearing Hinge4 Ball Bearings HEAVY DUTY No more sagging doors Made in USA Sold Individually Click for Dimensions 200435 We now offer the last hinge you will need to purchase, our Bearing Hinge. No More Saggy Doors. Our Bearing Hinge has 4 ball bearings pressed in the two pieces so the hinge only has contact on the bearings and no metal to metal contact like most other bearings. With using bearings this hinge will not sag or "woller" out like most other hinges.