SINGER Heavy Duty Sewing Machine Needles in size 110/18 are 5 machine needles perfect for heavyweight fabrics. Needles are strong enough to perform stitching on denim, drapery, wool and corduroy. The needle kit comes in an easy-to-store compact transparent case with the sizes 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.