MagiDeal 25pcs Tungsten Slotted Fly Tying Head Beads Nymph Head Ball Beads 2.4/3.3/4/4.6mm Gold/Black Made of the high density tungsten, the sinking speed is faster and the color is better Great for all your fly tying needs Material: Tungsten Size: Approx. 0.18 inch/4.6 mm Color: Gold