DOUBLE LOCKING: Non-marking polyurethane rubber furniture casters absorb shocks and vibrations. The ball bearings and double locking provide maximum load capacity and safety. NO NOISE AND MUTE The surface of the swivel castors is made of a flexible material so as not to damage the parquet floors. Quiet, good rubber grip without marking the parquet and sturdy.They come with a screwdriver, 16 screws and 16 washers. 360 DEGRS ROTATION Swivel brake casters have a 360 degree rotating design, The wheels turn and pivot easily which makes every turn much easier and supports the weight admirably. RELIABLE Casters with brake the lock on which blocks both the rotation of the wheel and also its steering, which allows excellent stability in lock mode and perfect maneuverability once on the wheels. WIDE VARIETY OF USE: These PU rubber swivel casters are ideal for a wide variety of uses, from DIY to industrial applications, the home , at schools, garages, stores, carts and hospitals, Perfect casters for small equipment and small space furniture, including ottoman, coffee table, plant racks, shelves, shoe bins, from toy bins, caddies, a table, storage under the bed.