Reins Tungsten NR Jighead Guard are smaller, stronger, and sharper then any other NED jighead around. The Reins NR Jigheads are made up of 95% tungsten and 5% nickle alloy making them 1.8 times as dense as lead and environmentally safe. The NR Jighead Guard have the traditional cylinder shape with a a slight longer wire bait keeper to better hold the bait down on the head.