What it is
The Hareline Stonfo Whip Finisher is a stainless steel whip-finishing tool for tying off thread with a clean, repeatable knot. It’s built with a weighted handle, polished finish, and an ergonomic grip, so it feels stable in the hand and stays durable, wear-resistant, and rust-free at the bench.
What to tie with it
Use it to whip-finish knots to lock down your thread at the end of a fly, especially when you want a tight, controlled finish on small hooks or on detailed dry flies. It’s also handy for finishing intricate patterns where you want to place a whip finish precisely without crowding the hook eye. Some tiers also use whip finishers with extended reach to finish somewhere other than right at the eye when the design calls for it.
Flies and the fish they're for
This tool is about how you finish a fly rather than what materials you’re tying in, so it shows up across the board: small dries for selective trout on spring creeks, technical tailwaters, and mountain streams all benefit from a neat whip finish on fine thread. The same clean, secure finish matters on trout nymphs and streamers, and it carries over to saltwater patterns too, where a solid tie-off helps flies hold up to repeated casts and hard fish.