The 6mm rubberized abrasive allow you to create delicate shadows and grays on large surfaces of copper, zinc, plastic. The flexibility of the material softens the gradations.
Diameter 6mm and length 22mm. 3 grits available, the two largest allow you to make two shades of gray, the finer allows you to soften the first ones very slightly.
In the proposed handles you can also use a large HSS steel scraper 4.7mm x 32mm
Universal 6mm handle for big HSS scraper blade 4.7mm x 32mm and 6mm rubberized abrasive.