54 Dean Street's Ephemera pure silk tying thread is perfect for traditional tying styles or any fly where the qualities of silk thread are desired.  These pure silk threads are manufactured in France by the historical embroidery Au Ver A Soie which has been producing fine silk threads since 1820.  Ephemera silk threads are very similar to Pearsall's Gossamer in diameter, being a true three strand twist, and strength.  To ensure uniformity and great color saturation these threads are dyed in floats ( full hanks) and are offered on 100 meter wood spools for use. The wooden spool fit a normal sized bobbin holder perfectly!