Smooth and Noisy: These braked rotating casters have smooth running dual wheels that allow the wheels to rotate completely, allowing you to easily move heavy furniture in any direction without generating any noise Scratcheless tires: Fully rotating casters with unmarked tires slide on smooth surfaces such as wood, reinforced wood, and tile flooring without causing scratches or scratches. Very suitable for various purposes from DIY to industrial applications - homes, schools, shops, hospitals, etc Durable and sturdy: These rotary cart furniture casters are made of high-strength nylon, which is wear-resistant and durable, and can be used for a long time. Through additional research structures, each caster can support up to 15 kilograms, and a group of 6 can support 90 kilograms Widely used: Double wheel casters enable stable and controllable operation of hand carts, carts, office chairs, beds, sofas, and other household furniture. The smooth black design will match and blend with any decoration, making it perfect as a set of casters for household, office, and industrial use