I accidentally bought the wrong size, and since I've opened the package, I'm selling it at a bargain price. I've only opened the package and haven't used it at all, so I hope someone can use it. Set of 4 caps to attach to furniture legs for smooth movement. - Brand: OMSORG - Quantity: 4 pieces - Size: SS (Diameter: 17-20mm) - Features: Attaches to furniture legs for smooth movement - How to use: Simply attach to furniture legs Similar product to Nichias Kagusuberu Thank you for looking.