Sold in 20 packs -these tungsten beads are slotted, allowing them to slide around the bend of most hooks on the market. The slots on the Hanak beads are the thinnest in the industry, which makes the tungsten beads heavier than most on the market. The Hanak name is most often associated with Euro-nymphing competition anglers, and the international exposure of these competitions is what put this Czech company on the map. Trout eat the bead!