These mounts level heavier equipment than other similarly sized swivel mounts. In addition to supporting higher capacities, the broad Acme threads adjust with fewer turns of the stud or jam nut than other threads. A ball-and-socket joint in the base swivels to keep equipment level on slightly sloped and pitted floors. For mounting versatility, you can install these mounts in either threaded holes or unthreaded through holes at the bottom of equipment.