Hareline Stonfo Magnifying Glass With Suction Cup

What it is

This is a 2X magnifying glass built to sit right at your fly tying vise on a flexible positioning arm. The lens view is distortion-free, and the base locks down with a suction cup so it stays put while you work. It’s lightweight and portable, so it’s easy to move between benches or pack for classes and travel.

What to tie with it

You use it any time you need to see the exact tie-in point and keep thread control clean, especially on small hooks. It’s handy for checking proportions as you build the fly, seeing into dense hackle, and inspecting your finishing work like the head, whip finish, and final thread wraps before cement.

Flies and the fish they're for

There aren’t specific patterns tied to this tool, but it earns its keep on tiny, detail-heavy flies where mistakes are hard to spot until they cost you. Think small trout dries and midges for tailwaters and spring creeks, and compact nymphs where clean tie-ins matter for drift and durability. It’s also useful on small saltwater patterns where a neat head and solid finish help a fly hold up to fish like redfish and seatrout.

How it compares

It doesn’t change what hooks your vise can hold or how strong the jaws are, because it isn’t part of the hook-holding system. It’s strictly a visibility tool, not a vise upgrade.