Schmetz Stretch Needles are made especially for synthetic suede or highly elastic synthetic knit wear. This needle is constructed with a medium ball point to help prevent skipped stitches. It comes in sizes 11/75 and 14/90. Choose the size based on the type and size of thread being used. Chrome Size 90/14 5pc- The Chrome needle resists heat and wear, will stay cool longer with less stitch distortion.