Derwent Burnisher & Blender Set for Color Pencil (japan import): Amazon.ca: Office Products | Derwent, Drawing supplies, Colored pencils
Derwent Blender and Burnisher Pencils in Tub, Colorless, Set of 72
Blender and Burnisher Pencil Set, Drawing, Art Supplies (2301774), The blender pencil is soft and colorless and allows you to blend 2 or more colors together; the.., By Derwent,USA - Walmart.com
Derwent Burnisher and Blender Pencils Set | BLICK Art Materials