GT/PR/FG Bobbin Knotter Aid - It is made of CFRP. The body is made of high-strength, ultra-lightweight CFRP material and can be stored compactly by closing the arm when transporting. Wear-resistant and durable, and it can clamp the fishing line without damaging the line Compact folding style, easy to use and carry - The arm opens when the strap is depressed, and closes and locks when pulled, so it can be stored more compactly when transporting. Fishing line tying tool, FG braided line connection aid Knot to Line Line Line - Helper tool that can be woven into knots. The switch type wave hook and offset arm allow you to easily, safely and quickly tie PE line and leader with FG knots. Fishing Line Spool Accessories - Line can be wrapped around a wave hook for 1-2 turns and easily secured with the switch closed. Uses soft rubber that does not roll up easily.