The 380-RK from PANAVISE is a Vacuum Base Repair Kit that is used with PanaVise 380 and 381 vacuum bases. It includes rubber pad, handle and lock washer.(NOTE: To determine if your Vacuum Base needs replacing, clean the pad with a clean towel and make sure that is free of debris. Then attach it to a clean, non-porous surface (such as a window). If it still loses suction, the pad needs to be replaced.