Superlevel 5/16-18, 4 pack

5/16-18 thread, automatic self-adjusting glide that permanently eliminates table wobble by instantly and automatically self-adjusting to an uneven floor. The weight of a table will activate Superlevel's spring-and-ramp mechanism. This spring-and-ramp action creates a permanent solution to stop the table from wobbling on an uneven floor. Adhesive allows mounting on a variety of fixtures.