1、DURABLE ALUMINUM ALLOY: The ring sizer mandrel is made of aluminum alloy. Lightweight, durable and portable 2、SMOOTH SURFACE: 31 piece finger sizer kit is made of stainless steel. Fine workmanship bring smooth edges, will not hurt hands 3、ACCURATE SIZE: Metal ring measure ruler is available in 4 sizes, including US size 2‑15(specific to quarter size), Hong Kong 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 ring size measurement tool, you can quickly calculate the size of ring and finger. Then give your husband, wife, girlfriend, boyfriend a ring of the correct size as a surprise gift 5、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 tear <div class="wang-edit-text"><p class="wang-edit-text"><p class="wang-edit-text">Item Type: Ring Sizer Measuring ToolMaterial: Aluminum alloy, stainless steelBar Code: US, Hong Kong, Japan and EuropeCircle: US standard size circle<style> .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }</style> 1 x Ring Mandrel1 x Hammer1 x Ring Gauge Finger Sizer