Polyurethane round caster wheels are mainly used for trolleys for their light weight and high load carrying capacity. Advanced design of these caster wheels minimizes noise generation during movement. Being corrosion and abrasion protected, PU caster wheels have long service life for their harsh chemicals, salt and oil resistance capacity. Excellent dynamic attribute is the other feature of round caster wheels. These highly resilient round caster wheels have excellent floor surface protection properties that prove to be advantageous for maintaining standard quality of costly flooring. These 5x 4 inches wheels are appreciated for their burr free smooth surface, crack protection capacity and ability to adapt to different working conditions.