Heavy Metal is back & its better than ever. The original formula has been fine-tuned to give better adhesion, greater grip, easier manipulation with no loss of weight. RECOMMENDED GUIDE FOR HEAVY METAL For winter & cold conditions use Heavy Metal Extra Original Silt. For summer & warm conditions use Heavy Metal Green or Brown. For extreme hot climates & overseas use Heavy Metal Plus. Heavy Metal > Easy to use > Can be reused > Fantastic size to weight Our Kryston Fishing Tackle range is expanding online right now, shop with us for your favourite brands.