A glow in the dark tubing for minnow bodies. Sizes and width of tubing: small 3/32″, medium 5/32″, large 3/16″, x-large 5/16″. Per 3′ package. This is the best material for Alaskan flash flies, and also makes excellent saltwater patterns. Every night when we shut off the lights in the shop you can see it glowing. Item# 1548