Twin Flanged Wheel of Solid SteelWheel:heat-treatable steel, machined, hardness 190–230 HBlightly-oiled surfaceV-shaped tread (for angular steel)extremely low rolling resistanceoutstanding wear resistanceextremely high static and dynamic load capacityOther features:chemical resistance to many aggressive substancesoperating temperature: -20 °C to +120 °Cconsider the surface pressure on sensitive floors due to high point loadselectrical conductivity (ohmic resistance) ≤ 104 Ω