3M 440-150 SandBlaster Wall Sanding Sponge, 2.6 in x 2.8 in (6.7 cm x 9.5 cm) 150 grit3M is a diversified technology company serving customers and communities with innovative products and services. 3M is committed to actively contributing to sustainable development through environmental protection, social responsibility and economic progress. The 3M; SandBlaster; wall sanding sponge makes sanding spackle, paint drips or other minor imperfections when painting fast and easy. The sponge features two unique surfaces, one sands and one cleans.3M 440-150 SandBlaster Wall Sanding Sponge, 2.6 in x 2.8 in (6.7 cm x 9.5 cm) 150 grit Features:; Easy spot sanding sands and cleans; For wall preparation; High performance guaranteed; 150 grit; Carded