Close to the transparency of water, it won't startle fish! High strength, so it won't easily break even when rubbed against rocks or concrete walls! Optimal specific gravity for sinking♪ No water absorption, so excellent durability! Cost-effective, so you can use it with ease♪ I use it as a shock leader or leader for PE line ^ ^ 1.5 (7.15LB) 0.20mm 300m For shipping purposes, the transparent outer box will be replaced with a waterproof vinyl bag. Material: Fluorocarbon