HiyaHiya Bamboo Interchangeable Needles feature key-less screw on connections and swivel cables. Our small HiyaHiya Interchangeable set includes 7 sets of tips in sizes from 2-8US (2.75mm-5mm) and tips are approximately 5" long. Each set includes a practical and portable brocade case, needle tips and 4 cables (to make 2-26,1-34 and 1-42 inch needles). Each set also includes a set of needle grips. Cases come in assorted fabrics as shown in picture. Case has 2 zipper pockets and 2 rows of pockets for your needle tips. NOTE - THE US #3 is a 3.25mm. The 3.00mm tips may be purchased separately.