2 Sealed and 7 open Magic Thimble Transparent Nylon Thread Size 50 by White Sewing Products. It never hurts to ask.
Threadart Black Nylon Invisible Thread, Huge 6600 Meter Spools 0.004 (0.12mm) Diameter Thread
Spools & Thread, Sewing (1930-Now), Collectibles - PicClick
Thread and Notions Kits for Embroidery, Quilting and Sewing Machines
Ode to Orts –
Invisible Thread Magic New Floating Trick Clear Sewing 219 Yards Nylon Magicians
Magician's Invisible Thread 45 Feet 15 ft x 3 reels for Real Magic Tricks
Thread and Notions Kits for Embroidery, Quilting and Sewing Machines
VINTAGE WHITE BONE China Hand Painted Umbrella Clown Thimble £1.67 - PicClick UK
Size: about 0.4mm thick, 40 yards. Proper size that fits for most beads like pony beads, lava beads, kandi beads, glass beads, seed beads and so on.
PH PandaHall 0.4mm Clear Fishing Line Invisible Nylon Thread Jewelry String Wire Xmas Cord String Crystal Beading Cords for Christmas Tree Party Decor