This is a jig head specialized for the インチ(inchi=inch) inchi-wacky rig. Zappu studied out the weight distribution in the head, the key component of worm actions, and came up with this best curve. The shank length was uniquely adjusted so the hook touches the mouth of the bass the moment it bites. The ultimate jig head is completed that lets a worm sway in bigger motions and immediately turns a bite into a hook-up. It is finally here for anglers seeking to perfect their inchi-wacky rig.