Mason Line String Kit: mason line string kit includes 3 rolls 500 feet mason line string, 1 yellow post, 1 pipe level and 5 line levels; Mason line string set allows users to quickly establish both vertical and horizontal reference lines, these levels help professionals quickly and accurately ensure that piece of masonry is level Nylon Construction String: crafted from braided construction nylon line, mason line string has reliable toughness; This braided design enhances its tensile strength, reducing the risk of snapping under tension; It is resistant to abrasion from rough surfaces; Unlike twisted strings that can fray reloadable line reel allows for clean and controlled dispensing and rewinding of mason line string; This design minimizes the common frustration of tangled lines, saving time and reducing material waste; This reel is easily reloaded with a spool once the current one is depleted, making it a reliable tool that supports repeated use mason line string is offered in a fluorescent pink, chosen for its high visibility in many lighting conditions; This feature is crucial for outdoor work or in dimly lit areas, because it helps users clearly see the guideline from a distance mason line string is suitable for precise work such as installing fence posts, aligning bricks and blocks, constructing deck frames, garden landscaping, and outdoor surveying; Braided construction nylon line can help you draw useful positioning lines Color: As Shown Material: plastic Package Contents: 3 rolls 500 feet mason line string, 1 yellow post, 1 pipe level and 5 line levels Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.