Silk Sutures,  Non-absorbable   Basic Sutures for Small Animal Surgery  Non-absorbable Silk - The natural softness of silk has been preserved in this  high-grade natural suture. This Non-absorbable Suture is composed of a protein  called fibroin. Coating: Wax, Characteristics: Silk suture has a smooth flow  through tissue while maintaining knot security. Indications: Dekantel silk  suture is indicated for use in general soft tissue approximation and/or  ligation, including use in cardiovascular, ophthalmic, and neurological  procedures. Sizes: USP 5 through 7-0. Construction: Braided. Colors: Black  (colorant: logwood extract). Non-sterile 100 yard spool. **Sold for research purposes only and not for human use**