The Tolsen 42013 is a chalk line set designed to help builders, plumbers, and electricians create precise, fast markings across various work surfaces. It features a reel with a 30 m line and a specialized winding system that operates three times faster than standard versions, allowing you to reset the tool quickly between tasks. To ensure your lines are straight and accurate, the kit includes a bubble level alongside the main reel. You also receive a 115 g bottle of blue powder, which provides a clear, high-contrast mark that is easy to see on most construction materials.