You can sharpen it with a normal whetstone

Original Case will follow with the goods

Regarding Maintenance

making this a double-edged deba knife that we recommend

HONMAMON "HANAKUMAGAWA" Japanese Bud-Cutting Shears 200mm for Bonsai

"HANAKUMAGAWA" Pruner Type A 200mm(7.9") Japanese Craftsman Hand-Crafted Japanese Hatchet You can sharpen it with"HANAKUMAGAWA" Pruner Type A 200mm(7. 9") Japanese Craftsman Hand Crafted Three HONMAMON Stars (link) Size: Total Length 200mm Blade: Blade length: 65mm, Blade width: 26mm, Upper blade thickness: 4mm, Receiving blade thickness: 5. 5mm Handle Length 135mm Thickness 20mm Cutting edge width 53 mm, handle butt opening width 140 mm Weight: 260g Scissors shape: Type A (thin blade finish) Material: Carbon steel for blades Caulking: Screw nut Spring shape: V