Aurifil Dark Grey 5004
This beautiful grey is prefect for piecing lighter colors. It is a 50wt thread and leaves a nice crisp stitch and can also be used in subtle machine and longarm quilting.
Needle Recommendations based off of the company website:
~80/12 Microtex/ Sharp, Universal, Quilting, or Denim Needles (50wt in the bobbin)
~ 4.0 Longarm Needle (50wt in the bobbin)