Key listed details include model 25920
Overall dimension (height x width): 4-1/2" x 4" (114 x 102 mm) 3-1/4"OD
Tread: High-quality balloon cushion tread
and it provides the 100% grease identification they demand
Lid stays closed when not in use
8" x 2" Polyon Aluminum Wheel Rigid Caster - 1250 lbs. Capacity Echelon Key listed details include modelProduct Overview Polyurethane elastomer tread chemically bonded to an aluminum core. Aluminum core has a strong attractive appearance, is lightweight, and resistant to rust and corrosion. Tread: Polyurethane Elastomer This caster is listed with wheel diameter 8", tread width 2", load capacity 1,500 Lbs., tread type Polyurethane Elastomer, and bearing type Ball Bearing. Before ordering, verify the listed wheel dimensions, load capacity, bore or