These are old stock but never used, like new! They are USA made and are nickel plated bronze. Excellent quality. They are 1 & a half ìnches long and the inside height at the hump is a half inch I.D. They are made by Wilcox Crittendon ....an excellent Marine supplier now out of business. We are offering these at $4.00 ea or 5 pcs for $15.00 Let me know if you want more than 1 pc and I can adjust the pricing and shipping. Note that there is no insurance on the shipping unless requested.