This set of 32 swivel casters with double brakes will be a great accessory for small equipment and furniture like workbench, trolley, coffee table, plant stand, bookshelf, shopping cart, etc. This set of 32 swivel casters, half with brakes, will be a great accessory for small equipment and furniture like workbench, trolley, coffee table, plant stand, bookshelf, shopping cart, etc. These casters are made of rubber which is distinguished by a good shock and vibration resistance, enabling these casters to run smoothly and quietly. Additionally, their soft surfaces effectively protect your floor from scratching. Besides, the zinc-coated iron frame is highly rust-resistant and thus adds to the catser's sturdiness and durability. These swivel casters are equipped with brakes for flexible control.