DIXON Industrial Lumber Marking Crayons, 4.5" x 1/2" Hex, Black, 12-Pack (49400) Description 464-49400 Features: -These extruded lumber crayons last up to 10 times longer than ordinary molded wax crayons. -Fade-proof, water-proof, smear-proof. -Wont melt in direct sunlight. -Dia.: 1/2 in. Product Type: -Crayons. Category: -Crayons. Generic Dimensions: -Length: 4 1/2 in. Dimensions: Overall Depth - Front to Back: -4.5 Inches. Overall Product Weight: -0.72 Pounds.