This paper blending stump by Caran d'Ache is suitable for use with pastels, charcoal, graphite and colored pencils. It can be sharpened with
Caran d'Ache – Page 2 – Opus Art Supplies
Mr. Pen- Blending Stump, 13 Pack with Art Eraser, Blending Stumps
Jakar : Compass Cutter : 12 Replacement Blades With Leads
Jackson's : Curated Set : Charcoal and Graphite - Jackson's : Curated Sets - Jackson's - Brands
Caran d'Ache Artist Stump 140mm - RISD Store
Canson Hardbound Sketchbooks – Opus Art Supplies
Jakar : Protractor 180?? : 150mm
Caran D'Ache Blending Stump 140mm
Caran DAche Blending Stump — Fred Aldous