The RONZ 3X Strong Z Series hydro heads are cast from pure tin. The natural, fish-like shine and durability of this metal makes it the ideal jig head material. Tin is also a non-toxic, recyclable metal making it “green”. Only OWNER and GAMAKATSU hooks are used in building the RONZ. All head & tail models are rigged with RONZ action tails that are fish oil infused and magic enhanced. These are the highest quality 3X strong jig heads & tails available to fishermen world-wide.