General Electric WD12X10277 Lower Dishrack Roller Stud This part fixes the following symptoms: Not cleaning properly, unusual noise, door won't close. Dishwasher roller stud is a grey axle designed to replace a lower rack wheel's stud that is broken or bent. Dishwasher rollers are designed to make the racks within the appliance moveable, thus enabling you to load the dishwasher with ease.