Sia 1950 Siafast Three-Inch Disc

This P800 disc uses a ceramic and aluminum oxide grain on a flexible paper backing for very fine finishing before polishing. The three-inch format fits common spot sanders with hook-and-loop pads and interfaces. It is suitable for denibbing clearcoat, blending small repairs and refining primer. Operators can maintain even surface contact on crowns and edges with an interface pad. The manufacturer says the disc delivers uniform scratch patterns and predictable life, which reduces rework and supports consistent gloss development in the final buff.

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