POLYPROPYLENE MATERIAL: This stem casters is made of polypropylene material with heat resistance and wear resistance characteristics SCOPE of APPLICATION: Suitable for mechanical industries, loader transporter, furniture, workbench, trolley, etc 360 ROTATION: This stem casters can be rotated with 360 without dead angles, smoothly and unimpeded, can be used with confidence LOW NOISE: This casters is convenient to scroll, and is not easy to generate a squeak or noise, and meet your daily needs RELIABLE and PRACTICAL: Suitable for multiple grounds, the casters will not damage your hardwood floor or leave any track Specification: Item Type: Stem Casters Material: Polypropylene Wheel Diameter: Approx. 65mm/2.6in Wheel Width: Approx. 32mm/1.3in Applicable Scenario: Machinery Industry, Loader Transporter, Furniture, Workbench, Trolley, Etc. Package List: 1 x Stem Casters 1 x Mounting Brackets 6 x Screw 1 x Nut Note: When installing the casters, keep the rotating shaft in a vertical state