SF 25PCS 1.5-4.6mm Cyclops Tungsten Bead Head Eyes for Fly Tying Nymph Head Ball Beads Gold Practical Design: Hole in the beads allows the beads easily and smoothly to slide around the hook bend, convenient and practical for you to use. Tungsten beads will get your flies down faster and deeper, useful tool for you when fishing. Specification: Material: tungsten alloy ,tungsten content 98% Size: approx. Diameter 1.5mm; Weight 0.02g Diameter 2.0mm; Weight 0.06g Diameter 2.3mm; Weight 0.1g Diameter 2.8mm; Weight 0.138g Diameter 3.3mm; Weight 0.235g Diameter 3.8mm; Weight 0.356g Diameter 4.0mm; Weight 0.44g Diameter 4.6mm; Weight 0.7g Color: Gold Quantity: 25 Pieces Note: Please allow a slight dimension difference due to different manual measurements. Don't swallow, please keep them away from children.