The HiyaHiya 4" SHARP Steel Interchangeable Tips are made of high quality stainless steel. HiyaHiya Sharp Steel Interchangeable Knitting Needles feature key-less screw-on connections with flexible cables, near perfect joins and a slick but not too slick, smooth finish with sharp tips that are great for increasing, decreasing and intricate stitch patterns. They are lightweight to handle and will warm quickly to the hand. Increase your flexibility by purchasing extra needle tips for your HiyaHiya interchangeable needles. HiyaHiya 4 inch interchangable tips are comprised of a 3.25 inch tip and a .75 inch metal connector for a combined length of 4 inches.