1.small friction 2.with good rolling characterisitics 3.mainly uses in transporting or warehousing system 4.high quality Specification:Accessory assembleProfiled aluminium frame +ABS skatewheel +stainless plated shaftWheel colourblackWheel diameter33mmWheel span45mm, 60mm, 75mm.Width of working surface20.6mmWidth of frame39.4mmHeight of frame34.8mmTotal height42.3mmLengthCustom designLoading ...