Plumb line-- cotton thread material for ink absorption, tensile strength, and corrosion resistance, masonry tools. Masonry line blocks--the bold mason line for bricklaying work and construction site layout is a versatile tool that can be used in various applications, site marking line. Construction line--enhance your construction projects with this mason line for bricklaying work and construction site layout, bricklaying work line. Floor layout mason line--the mason line is available in a long length, suitable for different construction and bricklaying needs, bricklaying tools and equipment. Bricklayer tools--made from cotton and thread, this mason line is known for its ink absorption, tensile strength, and corrosion resistance, masonry line for bricklaying.