Reach for Pro GSP when you need strength without bulk: 30 and 50 denier for midges and small nymphs, 100 and 150 for deer hair streamer heads.

Specifications

• Spool Length: 100 m (109 yd)
• Denier: 30, 50, 100, 150
• Material: Twisted gel-spun (GSP) thread
• Colorfast: Color is built in and won't run
• Available In: Black, olive, tan, and white in 30 and 50 denier; white in 100 and 150 denier.

Best for: Midges, small dries, and small nymphs; streamers, saltwater and predator flies, and deer hair heads on the heavier deniers.

Related: Compare Ultra GSP Thread and Veevus GSP.

Crank down hard on a deer hair head at 150 denier, or keep a midge body slim at 30.