Order this item if you have an existing coaxial needle and would like to order an additional or replacement inner needle.
We will need to know the original gauge. Note that you cannot change gauges or the centering indents may be too tight (or too loose).
For DIM C and DIM F, see the worksheet here: http://www.ramehart.com/pdf/coaxial_worksheet.pdf
In the comments box, during checkout, enter the gauge, DIM C, and DIM F.