If you use metallic thread then you need the larger eye of this metalfil needle to stop your thread from shredding.
This needle is in a size 80/12 which is perfect for your 40 wt metallic threads.
Hemline are a purse friendly brand but still with that high quality that you need.
Suitable for all brands of domestic sewing machines.
>>> Click this link for a free video on how to change your needles <<< (takes you to YouTube)