Sankyo Aluminum [Genuine Product] Replacement / Screen Door Wheel - 3K876 [Quantity: 1] *This is a replacement screen door wheel.* *Replacing it is recommended if the screen door becomes difficult to open and close.* *The old Sankyo Aluminum model number for this wheel is 3K876.* *Please use this as a replacement for this wheel.* *It is for both left and right sides, so two wheels are needed per screen door.* Note 1) Screws are not included.