A size12/80 machine needle is most common.
It can also be used in the bobbin.
Normally for embroidery work.
40 wt. snap-spools have black print markings.
40 wt. is available in multiple sizes.
Maxi Spool; 100% Silky Sheen Rayon (Viscose)
For Machine Embroidery, Decorative Sewing, and Quilting
Colorfast Washable; Dry Cleanable

Technical Details

Product Details

Product Dimensions

Package Dimensions
Width : 4.2 inch
Height : 2.4 inch
Length : 4.9 inch

Item Weight: 1 pounds (View shipping rates and policies)
Shipping Weight: 1.01 pounds (View shipping rates and policies)

ASIN : B002PNZGX6