Pack of 10 Groz-Beckert 62X59 Industrial Sewing Machine Needles. Needle System: 62X59 Equivalent system number : DVX59, 114SC A needle system is a group of needles made to fit specific sewing machines. All needles in a system are of the same length and shank size, but are of various diameters. Lower size numbers are narrower or thinner needles used for lighter materials. Higher size numbers indicate a needle of thicker diameter, used for heavier materials. Match your needle system to your machine, then the size of the needle to the product you are sewing. Groz-Beckert 62X59 needles are available in following sizes. Please select your size. Singer Size 21 (Metric Size 130) Singer Size 22 (Metric Size 140) Singer Size 23 (Metric Size 160) Singer Size 24 (Metric Size 180) Lower size numbers are narrower or thinner needles used for lighter materials. Higher size numbers indicate a needle of thicker diameter, used for heavier materials.