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These versatile sanding blocks are perfect for sanding large surfaces, creating straight edges, making dihedral angles, profiling leading edges, refining marginal edges, and more.
The abrasive grains are "bonded" by an exclusive process to the aluminum backing permanently. What's more, they are virtually indestructible!
These blocks have two abrasive faces with fine grains (320).
The rounded shape of this block (32mm radius) with one side concave and the opposite side convex, is ideal for sanding rounded shapes like karmans, curves, etc..