Plastic holder for attaching sandpaper. • bottom surface covered with microgum improves adhesion of paper clamped with metal clamps • appropriate hardness of backing enhances sanding effects • bottom surface covered with microgum improves adhesion of paper clamped with metal clamps • adjusted hardness of backing enhances sanding effects. • grip for attaching sanding sheets during hand sanding • equal backing under the sheet makes sanding easier
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