Applicable Models: Dishwasher rack roller wheels fit Bosch AP4339780 PS8727387 00611475. Replaces part numbers: AP4339780 1559847 611475 AH3477735 EA3477735 PS3477735 PS8727387. Function: If the rack often falls down when you try to pull out the lower rack, or makes a noise, and it makes different sounds when you push it in, or is even unstable and causes the dishes to fall, these rollers are the solution. Material: Dishwasher rack roller bottom made of high-quality ABS plastic material, the rollers are thickened, which makes the dishwasher rollers strong, stable, wear-resistant, corrosion-resistant, longer in use and more effective. Installation: Put the roller on the hook, put it on the hole during installation, snap it on and put it on top, the installation and operation are simple and convenient, and it matches your dishwasher perfectly. Install slowly during installation and do not break the buckle.