Hamon number starting with RW is not real clay tempered hamon, they're free.

Hamon number starting with HM is real hamon made through clay temper process. It isn't free to add a real hamon if you order a sword without real hamon. Please contact us if you need help.HM-10 to HM-17 hamons are available for steels without folded pattern, such as 1095, T10, 9260 steel and so on.

HM-18 to HM-22 hamons are available for blades with folded patterns, such as folded steel, Honsanmai and Shihozumi.

Blade Shape Options

Blood Groove Options