Durston PrecisionFit™ Aluminium Marked Ring Mandrel and 32 Ring Set (UK Sizes A-Z)

The Durston Tools PrecisionFit™ Marked Aluminium Ring Mandrel & 32 Ring Set is a professional-grade ring sizing solution trusted by independent jewellers, jewellery workshops, and major retail chains worldwide. Engineered for exceptional accuracy and consistency, the PrecisionFit™ system eliminates the need for unreliable cross-referencing between ring mandrels and ring gauges, ensuring precise UK ring sizing from A–Z+6 every time.

Manufactured to International Standard ISO 8653, the PrecisionFit™ Aluminium Ring Mandrel is expertly crafted in the UK from precision-engineered aluminium for outstanding durability and performance. Each mandrel is machined, hardened, ground, and engraved to an exceptionally high standard before undergoing rigorous PrecisionFit™ quality control checks to guarantee 100% sizing accuracy.

Lightweight yet robust, the aluminium ring mandrel weighs just 0.4kg (0.9lb), making it ideal for everyday use in busy jewellery studios and retail showrooms. Its ergonomic handle design provides a secure, comfortable grip for professional jewellers during frequent sizing and measuring tasks. Measuring 360mm in length, it offers excellent handling and precision during use.

Included in the set is the PrecisionFit™ 32-Piece Steel Ring Set, covering UK sizes A–Z+6. Each ring is precision-machined from high-quality steel to ensure a flawless fit with the corresponding mandrel measurements. With a 75mm diameter and weight of 0.1kg per ring, these durable sizing rings are built for long-term professional use and are individually inspected through the PrecisionFit™ Quality Control process for maximum reliability.

Whether you are sizing engagement rings, wedding bands, or bespoke jewellery pieces, the Durston Tools PrecisionFit™ Ring Sizing System delivers professional accuracy, consistency, and confidence every time. Don’t compromise on precision — choose PrecisionFit™ for trusted UK ring sizing accuracy.