1 3/8" (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. $1.84 each. Shipping is $2.60 plus $.22 for each additional piece.Combined shipping- to get cheapest shipping costs (when buying different items)please buy what you need and “request invoice” so we can send invoice with lower shipping costs."How to Request Invoice when using shopping cart"---From your eCRATER cart, near the top of the page, move your mouse curser over our name “lamppartsguy” and a drop down menu will appear with the option to request invoice from seller.
