Check the listing for details. Safco Sitting Stool 6666 Safco 6666 073555666601. Condition: New, Made in China. Listed at 178.09 USD. Safco Adjustable Height Diesel Stool Trolley - Polyurethane Seat Material - Powder Coated Frame Color - Steel Frame Material - Four-legged Base - Pewter - 1 Each Whether it's production or performance, let the Diesel Stool Trolley power your progress. Height adjusts from 23-1/2" to 29-3/4" during assembly. Ideally suited for workbench and worktable use in the industrial, institutional and educational industries, this short trolley design works well for shop or workbench use. Four-legged steel frame and clear-coat are built to hold up under rugged use. 17-1/4" diameter seat is made of polyurethane. Square footring offers the perfect place to rest your feet while working. Durable, nonmarring rubber feet on the 14-3/4" diameter base protect floors. Weight capacity is 250 lb.