This genuine Samsung dishrack slide rail stop, part number DD61-00183A, prevents the dishrack from sliding completely off the slide rail in your dishwasher. A failing slide rail stop can cause the dishrack to become unstable or fall out when pulling it in or out. Replace it to maintain the smooth operation of your dishwasher. Use gloves during installation to protect your hands. Verify your device's model number for compatibility before purchasing.