Theromplastic rubber (TPR) is an ideal tread choice for clean, noise-sensitive areas where floor protection and quiet operation are critical. The cushioned grip of the rubber surface provides a smooth ride, even over small obstacles. TPR is a durable, non-conductive material that resists chemicals, steam, salts, and oils. The rigid construction of the caster rig ensures steadiness in straight-line transport and stability when used in conjunction with swivel casters for applications where some turning is needed.