by: UNI Products

This is a strong, waxed fly tying polyester filament thread for larger flies. Measures 266 denier according to UNI and has been measured at 213 denier with 40 oz. breaking strength according to Scott ... More>>

by: UNI Products

This is a strong, waxed fly tying continuous polyester filament thread measuring 135 denier. It has been tested at a breaking strength of 33 oz. Lies flat on the hook, strong for its diameter. 200 yd.... More>>

by: UNI Products

This is a strong, waxed fly tying continuous polyester filament thread, measuring 72 denier. It has been tested at a breaking strength of 16 oz. Lies flat on the hook, strong for its diameter. 200 yd.... More>>

by: UNI Products

Extremely strong, lies flat without the slickness of Kevlar. While it’s the heaviest of conventional (i.e., not GSP or kevlar) thread at 400 denier, it is also the strongest with a tested breaki... More>>

by: UNI Products

This is the lightest thread we’ve seen. It measures just 20 denier, which would be about 19/0 or 20/0. Perfect for your smallest flies. Choose from black or white. 200 yd. spools. More>>

by: UNI Products

An indented flat surface with many light-reflecting surfaces. The small size is 12 yd. per spool and the medium size is 5 yds. per spool. More>>