Durston Jewelers Grooved Hardened Steel Ring Triblet Mandrel Ring Sizer Finger Gauge US Sizes 1-16

Durston Tools’ US Ring Size Marked Hardened Ring Mandrel providing sizing from 1 – 16. Hardened Marked Ring Mandrels from Durston Tools are designed to provide years of service to the busy jewellery professional. Each mandrel has an ergonomically designed handle to comfortably fit into the palm of your hand and provide a secure and safe grip. The mandrels themselves are ground and hardened to 64 RC. There has also been great demand for Durston Tools’ new marked ring mandrels so we have increased our range to supply hardened and ground mark mandrels, aluminium marked mandrels and the matching ring gauges. It is manufactured from hardened steel with a length of 360mm and a weight of 1kg. Like all Durston Tools’ tools, it has been designed and manufactured to give a lifetime of service and is part of our award-winning product range available since 1961.