Innovative INO-SSPC-A Parts Cart-A Series - Industry’s easiest-nesting cart. Perfect size for "lighter-hit" jobs. Makes a great portable workstation. High-carbon, heat-treated steel shelf brackets for years of trouble-free use. All shelves have upper side rails to prevent parts slide-off. Four industrial grade total-lock caster wheels for mobility; zero movement when locked. Durable powder coat finish stays new-looking longer. Shown with optional Shelf Mat.