100% Brand new and effective Name:Metal Steel Caster Wheel Ball Material: Carbon Steel Size:As the picture Color: Sliver Description: Material: Made of nylon material, quiet and wear-resistant, tremendous loading, strong and durable, highly efficient, low maintenance costs. Quiet Design: Low coefficient of friction and correct tube be certain that the roller is low vibration and noise, so you can use it flexibly and silently. Smooth Rotation: maximum flexibility and safety. The castors could be circled 360 degrees so that the coupled gadget can be rotated. It is very appropriate for carrying lightweight furniture and displays quietly and safely. Easy Install: Equipped with two screw holes, the installation hole diameter is 4mm, firmly constant to the workbench or workbench. Multipurpose: The wheels can be utilized for a wide range of applications, adding flight boxes,exhibition/exhibition equipment, toolboxes, cellular workstations, cabinets, electric housing furniture, etc. Package includes: 1pc x Ball Castor