Ch Hanson 10394 Yellow Railroad Chalk/box of 144 Go to amazon.com Related posts 12 best railroad chalk FeatureFor temporary, high visibility marking of surfaces such as metal, wood & concrete7/8" tapered diameter by 4" longPacked 144 pieces per box, priced per box DescriptionC.H. Hanson Yellow Railroad Chalk/box of 144 (1 Each) 10394