Ethicon Nylon Black Monofilament Suture 3-0, 18", FS-1 (663G) is a high-quality non-absorbable Nylon surgical suture. 18in. in length, has a size of 3-0, and are dyed black to provide greater visibility while suturing. This suture comes with a FS-1 reverse cutting needle. 12/BX. Price per box.