For moving from 1 to 200 tons on hard level floor surfaces without a track. Choose from complete self-contained moving kits or individual Rollers with swivel, swivel-locking, or rigid tops or attachments. Steel chain Rollers are available for regular floors, nylon chain Rollers for delicate floors requiring protection. Steering handles and other accessories and many modifications are also available. When the load exceeds 100 tons, consider using a steel track instead of a concrete surface.