Once you've worked with silk thread, it will be all you'll want to work with. It is 100% silk filament from Japan and even though it's a very fine thread, it's strong enough for machine quilting. Use it for hand applique work and your stitches will almost disappear. It slides through fabric so easy you won't even feel it going through. This classic collection contains seven 100-weight spools that are 218 yards each of silk thread.