Goldblatt Mason Line 500 FT #18 Chalk Line Braided Nylon String Line Nylon Twine

Durability - Braided mason's line has excellent durability, can withstand the hit of a trowel, will not tangle and kink stretch, and its durability makes it easy to use. The tight, consistent weave of the string will make for a premium, easy-to-use cord.