Durston Tool’s PrecisionFit™ technology is the most accurate ring sizing system in the World, guaranteed to provide a perfect sizing between mandrels and rings. The USA’s favourite ring mandrel range, with over 20,000 sold in the USA in 2019 already! PrecisionFit™ is the leading ring sizing system globally, used by individual jewellers through to large, multiple chains. Don’t settle for less than PrecisionFit™.

EU Customer DiscountGet an additional 10% off your order!

To assist our customers from the EU after Brexit, here is an extra 10% off your order to help with any extra import fees you may incur.

Use Code EU10 at checkout or..