【Heavy Duty Caster Set】The furniture casters are made of high quality materials, with silent double bearings and high hardness screw, Heavy duty construction allows high loads up to 80kg per caster. 【360 Degree Rotation】Equipped with a 360 degree rotation head, our swivel casters can respond instantly to changes in direction, making it easy to move furniture. 【Easy to Install】. Just twist the holes and tighten the screw to use, no need for screws and screwdrivers to easily install on furniture. 【Heavy Duty】The casters are heavy duty. It is an ideal furniture accessory for residential and commercial environments for shopping carts, rolling carts, plant stands, workbenches, bookcases, under-bed storage containers and so on.