F400 Grade Silicon Carbide Grit

F400 silicon carbide is the third stage in the tumbling process. Its fine-grained profile gently removes microscopic scratches and imperfections left by previous stages, paving the way for a mirror-like shine.

Use F400 after rocks have been thoroughly smoothed and pre-polished with medium grits like F220. Ensure rocks are clean and free of residue. 

F400 is included with our beginner and complete grit packs.