This strong polyester line is a good, economical choice for filling your Gyeonji rod winder. It has a very smooth finish, so it can cast with a bit more distance than the the comparable Braided Line, 20lb.
As a twisted line, this material can fray at the ends, but it will hold well with a secure knot. This line has moderate abrasion resistance. If you fish near angular rocks, select a tougher braided mainline instead.
Attach this braided mainline to your Gyeonji rod winder with a secure knot. Use a swivel or splice to attach a fluorocarbon or monofilament leader to the mainline, then tie on your terminal tackle.