Klasse Brand Machine Needles are a highly reputable precision machine needle. Each specific purpose needle application is designed with special features for ease of use and flawless functionality. Metallic Metalfil Twin Machine Needle by Klasse – 1 per pack. Twin needles are used for practical sewing and decorative sewing such as pintucks, seam finishes and topstitching etc. The size of the needle is measured in mm from tip to tip (3mm needle has a 3mm space between the points). Available in many types and sizes. Klasse’ twin needles are uniquely colour coded for easy identification. Note: Twin Needles Should be Used at Reduced Speed.