Muvtons Drop Forged Wheels are hot forged from Alloy Steels and can be used in the roughest of applications on the poorest of floors. These are virtually in-destructible within their capacity range. Tread faces are fully machined for easy maneuverability - these wheels offer high abrasion and oil resistance. Wheel Bearing Options : Sealed precision ball bearings, tapered roller bearings or roller bearings. Temperature range: -100°C to +600°C.