Check the listing for details. 13" TOP SPIDER TO MAKE LAMP SHADES. Condition: New. Listed at 4.82 USD. 13" brass-plated spider to make your own lamp shades. Outside ring galvanized silver metal- inside spokes are brass-plated. We have many different sizes in spiders and rings. Inside hole diameter is 7/16"- designed to slip standard 1/8 IPS pipe (3/8" outside diameter). Please ask if you don't see what you need in our store. 0 All our spiders have standard 1/2" machine drop. We combine with other items to save shipping costs. $4.82 each. Shipping is $4.60 plus $.88 for each additional piece. Combined shipping- to get cheapest shipping costs (when buying different items) please buywhat you need (WITHOUT SHOPPING CART) and “request invoice” (BEFORE YOU PAY) so we can send invoice with lower shipping costs. SHOPPING CART DOES NOT SEEM TO WORK FOR COMBINED SHIPPING.