Description
The Durston Round Ring Mandrel with sizing from 3mm up to 10mm is made from hardened steel, hardened to 64 RC using an induction hardener. It is unmarked, ground, and polished to ensure long-lasting durability and smooth use in professional workshops or factories. The mandrel measures approximately 380mm in length, weighs about 0.1 kg, and provides precise sizing for rings within the 3mm to 10mm diameter range, offering reliable performance for ring shaping and sizing tasks.