Also called the Metallic Twin Needle. Use for sewing dual rows of Metallic thread simultaneously.

New announcement from Schmetz below! You will know they are chrome needles because it will be listed on the package. Coming late 2021!

Schmetz 2021 Chrome Announcement
System: 130 MET ZWI. Needle Size: 14/90. Needle Distance: 3.0mm. 1 needle per pack. Carded.