What it is
Uni Nylon 210 Denier is a nylon fly tying thread made from multifilament nylon. It’s super strong, tough, and pressure resistant, so it holds up when you’re really leaning on the thread. It’s also easy to work with and can be split when you want to build a dubbing loop.
What to tie with it
This is a go-to thread for high-pressure tying like spinning deer hair for bass bugs, cinching down streamer materials, or binding and shaping when you need durability on the hook. Because it’s splittable, you can use it to spin dubbing loops for building bodies, collars, and messy baitfish heads. It also works well for spinning wool and other bulky materials where you want the thread to bite and stay put.
Flies and the fish they're for
Use this when you’re tying deer-hair bass bugs and other hair-head patterns for largemouth and smallmouth in ponds, rivers, and lakes where those flies get chewed up. It’s also a solid choice for general streamer tying for trout in rivers and tailwaters, and for warmwater fish like smallmouth where durability matters. When you’re building dubbing loops for streamer heads and shoulders, this thread helps you make flies that stand up to repeated strikes.
How it compares
Compared with Veevus GSP thread, Uni Nylon 210 Denier comes in more size options.