Hareline Stonfo Magnifying Glass For Vise

What it is

Hareline’s Stonfo Magnifying Glass for Vise is a flexible-arm magnifier that mounts with a locking suction base so you can park it right where you need it at the bench. It gives 2X magnification with a distortion-free view, and the arm lets you swing it in and out without losing your working position. It’s lightweight and portable, so it’s easy to move between vises or take to a tying night.

What to tie with it

Use it while you’re tying small flies or any pattern with tight, fussy steps where seeing the exact tie-in point matters. It’s handy for checking thread control and proportions as you build the fly, and for getting a clear look when visibility gets crowded by dense hackle. It also helps on finishing steps like whip finishes and head finishing, where a clean, inspected head is the difference between durable and sloppy.

Flies and the fish they're for

This is a tying visibility tool rather than a pattern-specific material, so it shows up on the bench for anything you tie, from tiny trout flies to bigger streamers. It’s especially helpful when you’re building flies with dense hackle or doing careful head work for trout and panfish patterns in rivers and lakes, and it’s just as useful for clean finishes on bass, redfish, and striper flies where thread wraps and tie-in points need to be tight and tidy. When your eyes can’t quite pick out the thread path or the exact spot you’re tying in, that’s where this earns its keep.