The Ametek 33423-1 is a replacement brush for vacuum motors. Used to replace motor brushes when their length drops below 3/16 of an inch. Compatible with motor model 116765-00, 116765-13, 116765-29, 117197-00, 117446-29, 117939-00, 117939-13, 119260-07, 1019292-00, and 119797-19. A genuine OEM Ametek part. Ensures a proper fit and functionality.