The draper chalk line refill provides replacement chalk specifically designed for use with draper chalk lines models 86921, 10742, 10871 and 11528. This essential consumable ensures your chalk line tools remain operational and ready for marking accurate guidelines across various construction and carpentry applications. Ideal for tradespeople who regularly use chalk lines for layout work, this refill chalk delivers consistent marking performance when snapping straight lines on timber, masonry, and other building surfaces. The compatible design ensures proper flow and dispersion through the specified draper chalk line mechanisms. Keeping spare chalk refills to hand helps maintain productivity on site, eliminating downtime when your chalk line runs empty during critical marking tasks. This refill is suitable for joiners, carpenters, builders, and other construction professionals who rely on accurate reference lines throughout their working day. Features and benefits bull compatible with multiple draper chalk line models for versatile use bull maintains consistent marking quality for precise guidelines contents bull 1 x spare chalk for 86921, 10742, 10871 and 11528 chalk lines