Knit Picks Options Interchangeable Knitting Needles:

This interchangeable needle set is designed with shorter needle tips that connect snag-free to flexible, smooth emerald cables. Set includes two cables - simply attach the needle tips to create a versatile 16" interchangeable circular needle perfect for hats, sleeves, and other more compact projects. Tip sizes are US 4,5,6,7,8,9,and 10 (3.5mm,3.75mm,4mm,4.5mm,5mm,5.5mm,and 6mm), and each tip is 2.75" long.

Note: Length of interchangeable cables refers to the total length achieved when the needles tips are attached.