KingCord

1/4" x 100' Diamond Braid Polypropylene Rope & Rope Holder. Is a general-purpose synthetic rope. It’s lightweight and does not absorb water, which allows the rope to float and makes it excellent for marine applications and pools.

Mason's Line has lots of uses beyond laying bricks. It's a great all-around twine that packs a lot of strength into a small diameter. It's great as a mason's line or chalk line, but works equally well for other home improvement projects, landscaping.