1X Strong Forged Round Bend Vanadium Steel Needle Point Hook With a P.T.F.E. Coating. Tungsten Round Ball Jig Head Provides Best Return On Forward Facing Sonar. Lightweight Conical Keeper At Optimal Location Allows Soft Plastics To Collapse Around It, Holding The Them Place While Not Throwing The Presentation Off Balance. Weights Are Laser Etched On The Heads For Quick Reference And Will Not Come Off With Use. Lead Free Weight.