Tabletops are made of lightweight charcoal colored HDPE blow molded plastic. Tabletop measures 1.38 thick. Features 12 of pneumatic height adjustment from 30 to 42. Tabletops flip and tables nest together fFor space-saving storage. Table frame, column and base are made of silver-tone powder-coated steel. Frame constructed of 16-gauge steel. Furnished with plastic adjustable floor levelers. Table comes standard with glides and casters