Lehigh NST1514HD Nylon Twine - Mason LineConstructed from continuous filament nylon specially treated to knot securely. It is much more durable than natural fiber twines because of its superior resistance to abrasion, rot, mildew and most chemicals. Available in neon colors for high visibility.Lehigh NST1514HD Nylon Twine - Mason Line Features:; Twisted Nylon #15 x 325 ft. White; Core Wound