This kit includes the following items:
Bobbin
3 Extra Spools
Arbor
The Norvise Fly Tying Bobbin Kit is a great starter package. The kit consists of a Norvise Bobbin (with ceramic tube), three additional machined aluminum spools (four, including the one on the Bobbin), a spooling Arbor to load your thread onto the aluminum spool, and instructions.
The bobbin works perfectly with the Norvise Fly Tying Vise and Vise Thread Post that comes with the vise.