Material:
Made of aluminium oxide and blue sponge, including 3 different grade: medium grade fine grade and superfine grade

Feature:
Washable and reusable, conveniently to use with wet and dry wipes.

Good choice:
The sanding blocks are good choices for polishing, suitable for wood, metal, furniture, paint, drywall.

Specifications:
Material: aluminium oxide and blue sponge
Measure: 4.7 x 3.9 x 0.47 inch/ 120 x 100 x 12 mm
Grade: medium grade, fine grade and superfine grade