Knitter's Pride-Karbonz Interchangeable Needles. Made from high- tech carbon fiber with tips in nickel plated brass. The light bodied carbon fiber & sharp brass tips is guaranteed to provide an unparalleled knitting experience. Ideal for all types of yarns and for every project. Customizable cord length. Interchangeable needles are excellent for socks, and projects with high stitch counts. Special interchangeable to be used with specially with cord length of 20 centimeters. This package contains one pair of size 6/4mm interchangeable needles (cord sold separately). Imported.