Jacks prevent up-ending semitrailers not connected to tractors, level trailers parked on slopes, and prevent landing gear from sinking into soft surfaces. High-strength steel. Flush-type zerk fitting for relubricating Acme screw. With reflective night-visible collar. Spin top models feature a manually turned Acme thread screw to raise and lower the jack for fast installation and removal. Includes 10"L lift screw. 14"-dia. dome-shaped base for max. leveling stability. Not made for lifting.

Spin Top Height Adjust