3-Pack: Contains 3 packs of Superior Threads Titanium Topstitch Needles in size 100/16, for a total of 15 needles Titanium: A thin layer of Titanium-nitride coating on the outside of the needle extends the life of your needle 6-8 times by providing advanced abrasion resistance. Designed for top-stitching: Superior Threads Titanium Topstitch Needles feature an extra-large eye and spacious grooves designed to accommodate topstitch thread. They are specifically crafted to facilitate flawless straight lines and uniform stitches. Machine Useage: Superior Threads Chromium Topstitch Needles are universally compatible with various "household" models including Brother, Janome, Singer, Pfaff, Bernina, Viking, Elna, Kenmore, Baby Lock, Simplicity, Necchi, White, and many other brands. When we decided to work with Organ Needle Company to develop a Superior needle, there were specific traits we wanted in a home machine needle. Durability, quality, proper stitch formation, and a long needle life. We are very proud of our Superior needles, especially since we were able to combine these important attributes into a home machine needle. Our titanium-coated Topstitch and Microtex needles are used and recommended by the pros for sewing, quilting, embroidery, applique, piecing, and more.