SCHLEIFFIX SANDING BLOCKS
Polishing and sanding rubber in squared stone form. Size 8cm x 5cm x 2cm. For cleaning, grind-polishing, smoothing and matting copper and zinc plates, but also wood, ceramic and stone.
Adding water, soap or turpentine substitute increases the effectiveness. Available in grade ranges from 30 (very rough) to 240 (fine). 18 in a pack. Price per item.