4 Different Grits: Includes 8 sanding blocks in 4 grits—60/80/120/220 (coarse, medium, fine, and superfine), 2 blocks per grit; our sanding sponge is reusable, washable, and suitable for all your sanding needs Perfect for Hand Sanding: Measuring 4" x 2.75" x 0.65", this sanding block is easy to carry and use, ideal for handheld work, and perfect for areas a power sander may miss or find hard to reach Robust & Durable: Crafted with high-elastic sponge and premium brown corundum, this sanding sponge ensures excellent flexibility and long-lasting performance without grain loss, thanks to its special treatment and unique glue formula Easy Identification: Grit numbers are printed directly on the sanding sponge for quick selection; choose lower numbers for rough sanding and higher numbers for finishing, ensuring the right grit for every task Wide Use: Ideal for polishing flat and irregular surfaces, this sandpaper is perfect for sanding putty, woodworking, furniture finishing, metal