The Bon Tool 84-943 Railroad Chalk Holder is a durable and reliable accessory designed for precise chalk marking in construction and carpentry. Crafted to securely hold railroad chalk, it ensures consistent and clear lines for accurate measurements and layouts. Its sturdy black design offers long-lasting performance, making it an essential tool for professionals seeking efficiency and precision in marking tasks. Ideal for use in various marking applications, this chalk holder enhances control and reduces chalk breakage, streamlining your workflow on the job site.