Tungsten disco beads with slotted hole

Someone said its surface can reflect light and attract more fish. I am a little doubt with it. But I am sure it can attract more consumers.

Size we have 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 4.6mm, 5.5mm

Color we have are gold, silver, nickel, black nickel, copper.