Laco Markal Railroad Chalk is a multi-surface chalk designed to make bold, broad marks on any surface. Ideal for temporary identification, this large diameter chalk lasts 1-5 days depending on the specific application and is scourable from wool. Great for use on concrete, wood, metal, plastic, textiles and livestock. May be applied under the most extreme conditions and industrial uses for identification purposes.Size: 1" x 4"
Laco All Weather Railroad Chalk SDS