7/8" (inside diameter)turned solid brass unfinished check ring with 3/8" hole(slips standard 1/8 IPS pipe). (Wehave several other sizes and we also have cheaper brass plated.) We can combine with other items to save freight. $1.28 each. Shipping is $2.80 plus $.10 for each additional piece.Combined shipping- to get cheapest shipping costs (when buying different items)please buy what 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.
