These D rings are very nice and a great, economical choice. The opening is 1-1/4", overall measurement is 1-5/16" x 1-1/2". The metal itself is 3 mm thick. These rings are not welded, but have a nice tight closure. But if you do need to open them you can do so with a pair of pliers (wrap the pliers in masking tape to avoid scratching the finish). Nickel finish.
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Other Purchases May Be Made In Our Etsy Store
6 Piece Artisan Pack
18 Piece Artisan Pack