Veevus GSP Thread - Gel Spun – All Points Fly Shop + Outfitter
VEEVUS GSP THREAD Fly Tying Gel Spun Polyethylene Black White 30 50 100 150 200 | eBay
UTC GSP Gel Spun Thread - flyonlyonline.co.uk
Veevus Gel Spun Thread | Ashland Fly Shop
Semperfli Nano Silk Ultra 30D 18/0 Lime Green Gel Spun Polyethylene (GSP) Fly Tying Thread
New Age Tying Thread | Global FlyFisher | GSP or Gel Spun Polyethylene fly tying thread was fairly unknown when Chris Helm wrote this article. His observations still stand.
Gel Spun XX-Strong Tying Thread | Angler's Trading Post