THE OVERALL HEIGHT IS 3.6250". SWIVEL CAST-IRON PLATE CASTER. 3" (75MM), LOAD CAPACITY: 250 LB. CAST-IRON WHEELS HAVE EXCEPTIONALLY LONG WEAR LIFE; CAN WITHSTAND TEMPERATURE EXTREMES. RECOMMAND FOR INFREQUENTLY MOVED OBJECTS ON ROUGH WOOD AND CONCRETE FLOORS. GENERAL-DUTY SWIVEL CASTERS.