Waxed Tackle Yarn Whipping Twine with Needle - Dark Navy Blue - 0.8mm x 40MWhipping Twine with High Wax Content with a Sailmaker NeedleKeep line from unwinding.#4 medium-weight (.8mm) Dacron twine for whipping and seizing line of all types. Both include.8mm sailmaker's needle. Available as twisted twine, it is braided and will not open because of the flat, strong seem.Features. Very strong Dacron twine for whipping and seizing line of all types. Includes sailmaker's needle. Navy. Twine with high wax content. Braided and will not open