This may be news to even the most seasoned knitter, but there are two sizes of US 17 needles - a 12.75mm and a 12mm! Many of our Knit Collage patterns are written to use the 12.75mm Chiaogoo needle, but for a couple of patterns, we suggest the 12mm version, which is this needle right here, by KnitPro, formerly Knitter's Pride. We have the 12mm US 17 in cable lengths of 24" and 40". The 12mm US 17 is also included in the Knitter's Pride Dreamz Chunky Interchangeable set shown here, with the option to purchase the 40" cord here.