Janome Purple Tip Sewing Machine Needles Janome Purple Tip Sewing Machine Needles are designed to prevent skipped stitches when sewing on stretch fabrics. TheJanome Purple Tip Sewing Machine Needles are great for sewing quilt layers and also for sewing across the hem. TheJanome Purple Tip Sewing Machine Needles are in size 90/14 and are 5 needles per pack.