This pack of SINGER overlock machine needles in a mix of sizes work best on woven and stretch fabrics. These needles boast a large needle eye with perfectly rounded edges and grooves for an easier, faster and more satisfying thread experience. Made of high quality cold forged steel and color coded by sizes, they come in a convenient plastic transparent case with individual storage slots and sizes marked on the clear cover. Details: Includes multiple sizes 5 needles Overlock Color coded for easy recognition Cold forged steel For use with woven and stretch light, medium and heavy fabrics Compatible with most quality serger machines Contents: 2 size 80/12 needles 2 size 90/14 needles 1 size 100/16 needle Care & Usage: To prevent needles from going dull when not in use, store needles in the compact transparent case which includes size marking on its cover