Uxcell Aluminum Oxide Resin Fiber Discs, Center Hole Sanding Grinding Discs Pad Flat Polypropylene Webbing Straps Package come with the screws

Package come with the screws for easy installation

and connect the screw end to the part that needs to be driven

but the total capacity for 4 casters is 45kg (calculated by 3 casters )

67"(L*W*H)

Uxcell Aluminum Oxide Resin Fiber Discs, Center Hole Sanding Grinding Discs Pad Flat Polypropylene Webbing Straps Package come with the screwsDescriptions: 1. Aluminum oxide resin discs are with a strong resin on resin bond that assures reliable performance. 2. Strong fiber backing that provides superior grinding performance and extended useful life. 3. Aluminum oxide fiber discs are made with a fiber backing that adds rigidity and versatility. 4. Can be used in a variety of ways, from grinding, de burrsing, and stripping, to blending, cleaning, finishing, and polishing.