X-LOCK N377 Cleaning Disc Metal, 115 mm, 22.23 mm. Quick cleaning results. The X-LOCK Cleaning Disc N377 Metal enables fast and thorough cleaning of metal and masonry surfaces. The 3D fiber fleece with an open structure ensures high material removal performance without clogging. Silicon carbide on the fleece continuously sharpens itself, ensuring even material removal. The disc is suitable for removing rust, paint, and oxide layers from metal surfaces, as well as for eliminating limescale deposits, moss, and graffiti from stone, marble, and concrete. A fiberglass backing pad provides support for the cleaning disc. Thanks to the keyless X-LOCK system, the cleaning discs can be changed quickly and comfortably.