JDG Pro Ring Mandrel

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The JDG expanding ring mandrel fits both JDG and Artisan Comfort Kit ring cores to help make turning rings simple and easy. Just mount the ring core on the proper mandrel step that fits best, then lightly tighten with the allen key and the mandrel will produce a solid grip on the ring core. Made from high quality stainless steel. Allen key included. Mandrel is supplied with a 1/2" dia. shank for use in a collet or drill chuck. Full Size MandrelsFit ring sizes 4-14, whole sizes onlyHalf Size MandrelsFit ring sizes 4.5-13.5, half sizes only Show more