Feature:1. WIDE APPLICATION: Ideal for quick ring and finger sizing, this tool kit is designed for wire processing, craft wire, wire wrapping and wire jewelry and is easy to use.2. RUBBER HAMMER: The soft rubber hammer has 2 sides and can be used to flatten or reinforce wires, the rubber tip will not leave marks on the jewelry or damage your jewelry.3. DURABLE MATERIAL: Ring mandrel sizer is made of aluminium material with easy to read mandrel size chart, ring sizer set is made of steel with flexible cable with screw connection.4. STANDARD SIZE: The ring mandrel sizer is US UK standard and is available in full and half sizes, the 27 rings size set is US sized (0-13) and available in half sizes.5. EASY OPERATION: Heavy duty mandrel with hammer, will easily make your ring round again, perfect for ring construction, holds shape perfectly and is easy to handle.Specification:Item Type: Ring Mandrel SizerMaterial: AluminumStick Code: US, HongKong, Japan and Europe.Package List:1 x Ring Size Stick1 x Rubber Hammer1 x Iron Stick1 x Ring Gauge SizerNote:The ring mandrel is a tool for ring sizing, but not for ring stretching.