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W.R. Cobb Jumbo Counter-Loc Ring Guards are the largest size available in the Counter-Loc line, engineered to fit ring shanks from 6 mm – 12 mm in diameter. The Counter-Loc design features prongs that wrap in opposite directions, creating a firm, secure grip on the shank without soldering or permanent alteration. Available in Yellow or White metal finishes, these guards offer a fast, reversible solution for ring size reduction — ideal for jewelers, retailers, and bench technicians.
| Brand | W.R. Cobb |
|---|---|
| Type | Jumbo Counter-Loc Ring Guard |
| Fit Range | Ring shanks 6 mm – 12 mm diameter |
| Metal | WRC Quality Yellow or WRC Quality White alloy |
| Sold By | Piece |
| Part # | Metal Finish |
|---|---|
| 642-23 | Yellow |
| 643-23 | White |
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