The Kincrome Vehicle Positioning Jacks are manufactured from heavy duty, powder coated steel with a fully welded construction allowing each to lift a whopping 684kg!Featuring heavy duty steel rollers for smooth operation allowing you to easily lift your load 360°, the jacks can then be locked into place with the fitted toe locks. Unlike other products in the market with plastic rollers that are prone to cracking, steel rollers mean these jacks will be lifting like new for years to come. Tough Nylon castors ensure smooth movement and are more suited to outdoor or plain concrete (non-painted) workshop floors.