Don't let the name fool you, this is a JRI made jig and is a deadly weapon, a must have in the box. JRI Custom Lures KO Stinger Heavy Yo-Yo Iron Jigs actually not iron they are made of zinc. Not as heavy as a brass jig, but there is just something about the Stinger that just gets bit. Can not get caught sleeping on this jig definitely one that's notorious for getting picked up on the fall. The zinc gives this jig a very unique flutter action that the yellowtail just can not resist.