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From Pathfinder Lost Omens Tian Xia Character Guide, which isn't enabled.

Tetsubo

ITEM 0
UNCOMMONRAZINGSHOVESWEEP
Price 3 gp
Usage held in 2 hands
Bulk 3
Category martial
Group club
Damage 1d10 bludgeoning

The tetsubo is a war club constructed out of heavy wood shod with iron studs, designed for smashing through armor and defenses. A tetsubo made entirely out of metal might also be referred to as a kanabo.

Pathfinder Lost Omens Tian Xia Character GuideORC