Nonabsorbable Suture with Needle McKesson Silk C-13 3/8 Circle Reverse Cutting Needle Size 4-0 Braided #S683GXFeatures McKesson Non Absorbable Surgical Suture Braided Silk Suture 4 0 Reverse Cutting Needle Needle type: C 13 Suture diameter (mm): 4 0 Suture type: Non absorbable Nonabsorbable, sterile, non mutagenic surgical sutures composed of natural proteinaceous silk fibers called fibroin. Uniform wax coating to reduce capillarity and increase surface lubricity which enhances handling characteristics, ease of passage through tissue, and knot run down