Polyurethane is a plastic material. It’s flexibility makes it ideal hand-sanding blocks.
Size: 25 x 20 x 80mm
90SHAW hardness. Should be the same hardness as your contact wheel.
These blocks can be used to hand-sand flat blades, or shaped to any radius to match the radius of your contact wheel to hand-sand hollow grinds.
In stock (can be backordered)