6.0 mm thickness steel bracket combines with Korean style Cast-iron core PU wheel. This wheel is round so it will move and rotate much easier compare to the normal flat American version. Plastic cover hubs and grease nipple are equipped
Very thick plate and fork with the help of good quality bearing make the caster durable. Moreover, the large size shock absorbing single spring keep the wheel roll smooth and quietly on uneven floor. Shiny red PU wheel is attractive.