Convenient step-by-step process; ring on the collet, gently tap the tapered pin with a hammer, and use the mandrel for final adjustments. Not suitable for rings with stones, very thin designs, or hard metals like titanium, , and stainless steel to prevent damage. Designed for ring sizes 7.5-10.5 (US), accommodating diameters from 0.74" to 0.96". Ideal for adjusting soft metal rings such as silver, gold, and copper. Made from sturdy 45 steel, ensuring long-lasting performance and resistance to wear during extensive use. Designed for both home and professional use, its compact form factor allows for easy storage and workspace efficiency., Weight: 0.75839018128 Pounds, Manufacturer: Aboiled