Supertwist No. 30 The beautiful reflection of this special effect thread is the result of lavish three times twisting process to give designs a unique texture effect and dimension.  Its strong nylon core and genuine metallic base enhance both its sewability and precious appearance on everything from heavy denim to vinyl upholstery, wool caps and terry cloth bath towels, festoon work, ornamental seams and many other decorative applications.  As a special feature, Supertwist's opal and crystal shades are denim-wash resistant.  1,100 yds/spool