This #18 polypropylene mason line from Mibro features twisted construction for reliable performance on the job site. The bright neon yellow color provides excellent visibility against brick, block, and concrete, making it easy to follow your guide line while laying courses. Includes a line level for checking grade.

• Twisted polypropylene construction for good strength and moderate stretch
• Holds knots securely for tight, consistent lines
• Mildew and chemical resistant - store wet or dry
• Neon yellow color for high visibility
• Includes line level
• #18 weight, 225 ft length