The lid hinge pin or detergent lid pin on your dishwasher helps dispense your dish detergent when your dishwasher is running. The pin fits with the dispenser lid and allows the lid to pop open and dispense detergent. It is a small, plastic pin that is approximately 3 inches in length. Due to its small size, the pin can be damaged relatively easily, and if your pin is broken or missing, it will need to be replaced. This product is sold individually.