This Organ Jeans Needle Assortment contains three 90/14 sized needles and two 100/16 sized needles. Organ Jeans Needles are suitable for sewing with jeans, canvas, coated fabrics, artificial leather, or similar thick materials. The slim, sharp ballpoint tip reduces drag as the needle penetrates the material, preventing needle and thread breakage. For better distinction, the piston is colored blue. Favorite Uses: Great assortment for sewing on elastics, knit fabrics, and other assorted weights of fabric with stretch; and threads from 40 wt. (lighter) to 30 wt. (heavier), and regular sewing threads.