General description This heavy-duty expanding stainless steel ring mandrel is designed to make ring turning and crafting significantly easier, providing a professional finish. It accommodates ring sizes from 7.5 to 10.5, allowing for quick size adjustments with the included hex wrench. The mandrel features a 7-inch base that fits various chucks and can be used with both lathes and drills. Its durable, wear-resistant steel construction ensures longevity, even with frequent use. Technical specifications Material: Stainless steel Size range: 7.5 to 10.5 Base size: 7 inches Weight measurement error: +/- 1-3 cm Compatibility and accessories Includes 1 hex wrench for expanding and contracting the mandrel Compatible with 1/2 inch drill chucks Installation Designed for use in a lathe or drill Usage Apply a layer or two of tape to the mandrel to protect the inside of your rings Effortlessly expand or contract the mandrel to fit different ring sizes Other information