The Dishwasher Upper Rack Kit 4 Pack is an OEM part for GE dishwashers. This kit includes four sets of studs and rollers that attach to the upper rack, allowing it to slide smoothly in and out of the dishwasher.  Causes of bad studs and rollers can include regular wear and tear, exposure to high temperatures and water, or damage from heavy or improperly loaded items.  Symptoms of bad studs and rollers include: The upper rack not sliding in and out smoothly The rack feeling loose or unstable Broken or missing studs and rollers The upper rack becoming misaligned or difficult to move This OEM GE part is also compatible with Hotpoint, RCA, and some Kenmore models.Part Number WD35X21039 (AP5985528) replaces WD12X10269, 4466961, WD12X10266, WD12X10268, WD12X22723.