<b>Watch video before buying, Please note: This is a shader for the spider installation. Please confirm that your desk lamp is a spider capable of assembling this lamp cover before purchase.</b><br> Top diameter:6 inch <br> Bottom diameter:13 inch <br> Tall:9.5 inch <br> Spider diameter:0.4 inch <br> Color:Off White (picture color) lampshades for tabel lamp table lamp lamp shades