Brand Name: c.h.-hanson | Color: black | Fade Resistant: yes | Length: 4.5-in. | Material: metal | Number in Package: 1-pc. | Packaging Type: boxed | Shape: hexagon | Waterproof: yes | Width: 0.5-in. | Works on Wet Surface: yes If you're looking for a lumber crayon to withstand some wear and tear, look no further than C.H. Hanson's lumber crayons. The no melt crayon's marks withstand temperatures up to 300 degrees Fahrenheit. It can mark lumber, metal, concrete and most other surfaces, yet it remains resistant to weather, fade and sun. Extend each crayon's life by protecting it with Crayon Armor. | For marking wood, metal or concrete | Great for multi-purpose use | Withstands 300 degree Fahrenheit | No melt design