IS-1 swivel castors packed, ground clearance: 100 mm, load capacity: 3,000 N per rack, material/surface: galvanized steel/PP, thermoplastic rubber, for mobile use of the IS-1 rack. Subsequent assembly possible. Ball-bearing castors., Note: Adjustable feet are not required when the castors are assembled/, cannot be used with a base, consisting of:, 2 swivel castors, 2 swivel castors with total lock, assembly material, delivery condition: packed