Kollage SQUARE Interchangeable Knitting Needles are designed to be ergonomically suited to your hands, decreasing stress and strain for those who love knit. Unique patented quick interchangeable disconnect allows you to quickly change to a different size needle. Package contains 2 individual tips with female end clip. ** Requires quick release tool to disconnect and cables sold separately.Kollage Needles enable you to knit faster with more uniform stitches and are perfect for slippery yarns or if you knit tightly, and for knitters who have arthritis, carpal tunnel or stiffness in their hands and fingers. Ultra light weight aluminum needles with, stainless steel swivel action joint, and various cable sizes for many projects. High quality product with a lifetime warranty from all manufacturing defects. Your going to love them!