This sanding kit includes a 3" Sponge Pad, 3" Flexi Pad, and two packs of hook & loop discs (50 discs in each pack!). The Flexi Pads are firm and durable and the sponge pads are flexible and great for inside bowls + contours. The two pads are hook & loop. You will receive one finishing pack and combo pack of discs. The finishing pack includes: 180, 220, 240, 320, 400 grits. The combo pack includes: 60, 80, 100, 120, 150 grits. These are the Stearate discs that resist loading and are excellent for a variety of sanding operations. 100 discs in all!