The Hanak UV+ tungsten bead directly correlates diameter and weight, and comes in black and fluorescent UV red. The black-and-red combination pairs well with dark nymphs to which you want to add a bold red accent. The UV-reactive finish enhances both the weight and the contrast of the head. Sizes range from 2.30 to 5.50 mm and from 0.06 to 1.30 g; packaging: 15, 10, and 7 pieces per bag, depending on the diameter. First, choose the diameter-weight combination based on the hook and the drift, then select the color.