Our advantage: (CE,ISO9001,ISO13485,YY0287) --Stable Quality --Reasonalle Price --Prompt Service --long term Cooperation 1.Material: silk2.Sterilization: By E.O. Gas,(or By Gamma Radiation on request);3.color: black4.Suture Gauge USP: 4/0,3/0,2/0,1/0,1#,2# ,3#;The length of suture can be provided according to your requests. silk cassette