Because fly fishing targets species from small trout to large bill fish, it is difficult at best to actually build one set of vise jaws to cover it all. However, each and every Regal vise gives the tier a large range of hook size versatility in each tying head.
Most trout fishing requires hooks from size 22 to 3. Its basic. The food sources are midges, may flies, caddis flies, stone flies and bait fish; which are fished both sub-surface and surface. These food sources almost never fall out of the range of hook sizes 22 to 3. In those rare circumstances where you may need to tie as small as size 32 or bigger than a size three streamer, we still have a set of jaws to do the job and meet the tying range.
On the other hand, big saltwater species require big baits; flies with hooks from 1/0 to 4/0 are not uncommon. The descriptions listed are intended to help you with your decision on which vise to purchase. As you diversify your fishing, you may want to consider purchasing an additional head and jaw assembly to meet the challenges of tying the flies for your targeted quarry. Regal sells head and jaw assemblies as a separate accessory to help accommodate you in your fly tying needs.