Product size about : 30*30mm/1.18*1.18in inner diameter 13mm/0.511in Product color: As shown in the figure Product material:ABS product features: Product information: 8 sets of chair leg covers, interchangeable, can be installed on two chairs, inner diameter 13 mm, wear-resistant, corrosion-resistant, waterproof, moisture-proof, and sun-proof. Easy to install: The chair leg covers are easy to install. The inner diameter of this product is 13 mm. If the inner diameter of the chair leg is the same as this product, it can be easily installed on the chair. Universal outdoor use, chair leg covers can effectively prevent slipping and better protect you. Indoor use, it can prevent floor scratches. Wide range of uses: The chair leg covers are specially designed for camping chairs to prevent chair legs from sinking into the mud. Very suitable for outdoor use such as camping, hiking, traveling, picnics, barbecues, etc. Sound insulation: The chair leg covers can prevent the moon chair from slipping, prevent floor scratches, and reduce the noise when the furniture moves back and forth without making harsh sounds. Precautions: 1. As we all know , the different computers display colors differently, the color of the actual item may vary slightly from the following images. 2. If you feel difficult to choose the size, you can contact us at any time. We will give you some suggestions, but for your reference only. Shipment includes: 10/30 pcAnti-slip chair cover