Material: 316L stainless steel, TA2 titanium can also available Nickel-free and lead free Finish: High polished Magnets: Can be inserted germanium, magnets, infrared ray, negative ion, nano stone, and wave energy Plating: IPG gold plating, IPB black plating and No plating are also available Dimension: #4 to #13 Stone: No stone Packaging: Polybag/OPP bag (inner) + carton (outer) Minimum order quantity: Each size for 50PCS OEM/ODM orders are welcome Lead time: 25 to 30 days Price term: FOB Shenzhen Payment term: T/T( 30% deposit to confirm the order, and pay the balance before shipment)