4" Magnetic Backing Plates – Lapidary & Polishing Accessories

Our Magnetic Backing Plates are designed for precision, convenience, and efficiency, enabling diamond, sanding, or polishing discs to attach quickly and securely to your grinder or polishing machine. Perfect for lapidary work, jewelry making, glass finishing, metalpolishing, and stone shaping, these magnetic plates provide stability, reduce vibration, and streamline your workflow. Featuring a strongmagnetic grip, discs stay firmly in place during operation, while quick disc changes allow seamless switching between different grits or polishing pads. Constructed from high-quality, durable materials, these plates are compatible with diamond, resin, metal, andpolishingdiscs, making them an essential accessory for professional and hobbyist polishing setups. Ideal for mounting diamond orpolishingdiscs,sanding andfinishing gemstones, glass, ceramics, metals, and shaping stones.