Single needle three threads for trimming and over edging. Vital components and moving parts hardened for durability. Self-locking tension mechanism to ensure perfect stitching even at higher speed. Capable of more than 3000 spm. Stitch length : 6.30 stitches per inch. Stitch width : 3/32" - 5/32" Suitable for hosiery, ready made garments, tailoring houses and for different type of fabrics like cotton, wool, silk, nylon etc