kostanzo (incomplete)leveling stem casters set of 2 heavy duty retractable caster wheels, 1/2" and m12 stem size, total capacity 660 lbs, adjustable wheel with ratchet handle for workbench, cabine, machine, etc 660 lbs total capacity is up for auction in Industrial & Scientific. This item is in As Is condition. Bid on this item at our Cincinnati - School Road location before the auction closes.