Kreg multi-purpose project blocks are the ideal way to support, hold and work on projects anywhere. These incredibly versatile blocks elevate your material to sit 1-1/2 in above the work surface for convenient sanding, finishing, routing and much more. The blocks feature a GripMaxx surface on each face, one side to grip your workpiece and one side to prevent the blocks from moving around on your workstation. That's ideal for tasks like sanding when you don't want anything slipping and sliding. Elevating the material makes routing edges easier with added clearance for the router bit. The height also gives clamps room to fit the clamp head under the workpiece, which is useful for drilling pocket holes or assembling your project. When it comes to painting or finishing, use the retractable painting point with GripMaxx for a little extra height. Just twist the project block to raise the point to rest your material on, the painting points won't even stick to your material or ruin your finish. Each purchase comes with a set of 4 pucks, with a collective 200 lb weight capacity, to easily balance your project of choice.