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

Tri-bladed Katar

ITEM 0

UNCOMMON DISARM FATAL-D8 MONK

Price 1 sp

Usage held in 1 hand

Bulk L

Category simple

Group knife

Damage 1d4 piercing

This punching dagger resembles the standard katar, save that a pair of blades can be folded out from the center blade, transforming the weapon into a starburst shape well suited to catching foes' weapons.

Pathfinder Lost Omens Tian Xia Character GuideORC