Gulff Thinman 15ml (low viscosity) is thin but not too thin, with a viscosity for beautiful finishing. It does not cover or fill the fly detail, but highlights it.
Gulff Classic 15ml (medium viscosity) is the best option for small fly body building and general nymph bonding. Recommended for larvae, pupae, nymphs, scuds, and small detail bonding.
Gulff Flexman 15ml (medium viscosity) is the best option if you need Classic medium viscosity resin features but a flexible and soft finish. It is very strong, while also staying flexible and soft. Remember that predators have large and strong teeth. Thus, Flexman is not too soft. Flexman finishing meets the requirements for shrimps, streamers, fly heads, and eggs easily. Please note that the more flexible the resin is, the more time it needs for curing.