SINGER denim sewing machine needles in size 100/16 are used for stitching denim and other heavyweight or layered fabrics, great for jeans and other thick clothing repair or crafting. The needle kit comes in an easy-to-store compact transparent case with the size marked on the cover for easy recognition. These SINGER needles are color coded silver for ease of recognition, and compatible with SINGER, Brother, Kenmore®, Bernina, Janome, Juki® and other quality household domestic sewing machines. Domestic machines needles are not compatible with industry sewing machines.Details:Size 100/165 needlesLarger needle eyes and t-shaped needle headsColor coded for easy recognitionCold forged steelFor use with denim, heavyweight canvas, duck and other heavy tightly woven fabricsCompatible with most household domestic sewing machinesCare & 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