CAMAR 415 Plastic Leg Leveler:
SKU 415-10-P2
Two-piece leveler, including both foot and shaft made of flat, black ABS plastic
Adjustable from 3-3/4" to 4-3/4"
Capable of supporting up to 330 lbs per leveler when used with a socket.
Available here as and individual component or in bulk (100 pcs.).