Feature:1. DURABLE ALUMINUM ALLOY: The sizer mandrel is made of aluminum alloy. Lightweight, durable and portable2. SURFACE: 31 piece finger sizer kit is made of stainless steel. Fine workmanship bring edges, will hands3. ACCURATE SIZE: Metal measure ruler is available in 4 sizes, including US size 2‑15(specific to quarter size), Hong size(HK), Japan size, European size(CU). Finger size gauge is US standard size 0‑15(specific to half size)4. EASY MEASUREMENT: With this size measurement tool, you can quickly calculate the size of and finger. Then give your husband, wife, girlfriend, boyfriend a of the correct size as a surprise gift5. DOUBLE HEADED JEWELRY HAMMER: Used to hold and adjust rings. The clever design of the soft tip can well protect your precious jewelry from wear and tearSpecification:Item Type: Sizer Measuring ToolMaterial: Aluminum alloy, stainless steelBar Code: US, Hong Kong, Japan and EuropeCircle: US standard size circle Package List:1 x Mandrel1 x Hammer1 x Gauge Finger SizerNote:The mandrel is a tool for sizing, but not for stretching.