Lyra Water-Soluble Graphite Crayon 6B - Philadelphia Museum Of Art
Amazon.com: Lyra Graphite Crayons - Graphite Stick Crayons for Artists and Students of All Ages - Set of 24 Durable 2B 6B and 9B Graphite Sticks for Sketching Drawing Shading and More
Lyra Graphite Crayon / Lumber Crayon (Non Water-Soluble) – K. A. Artist Shop