Foldable Dual-Grit Sharpening Stone

Measuring approx. 12.5 × 3.25 × 1.6 cm folded and 23 cm open, this sharpening stone combines portability with functional versatility. Its body integrates crystal abrasive grains — coarsely graded at 360–400# for aggressive metal removal and finely graded at 600# for smoothing and finishing — all mounted on a stable plastic substrate. The hinged fold mechanism locks securely when open and protects both grit surfaces when closed, preventing accidental abrasion or contamination. Lightweight yet rigid, it withstands repeated pressure during sharpening without flexing or shifting. Suitable for routine maintenance of kitchen knives, pruning shears, utility scissors and outdoor blades — wherever precise edge care is needed without access to power tools or workshop space.