Offered in two sizes this heavy duty low boy stock cart handles the big loads. The large model features 6 total casters 4 swivel and 2 fixed. The other model has 4 casters two of which are swivel while the remaining two lock. Each has a 1000-pound weight capacity and is designed with welded joints and durable extruded aluminum wall tubing. Notice also the rounded front which is designed to prevent accidental damage to your store displays and other property