pf2e.fyi
From Pathfinder Lost Omens Pathfinder Society Guide, which isn't enabled.

Combat Grapnel

ITEM 1
UNCOMMONFINESSEGRAPPLETETHEREDTHROWN-20
Price 9 sp
Usage held in 2 hands
Bulk 1
Category martial
Group flail
Damage 1d6 piercing

Although grappling hooks typically serve as a climbing tool, this specially reinforced grapnel attached to a rope up to 10 feet long can be swung as a weapon. This is a martial melee weapon.

Pathfinder Lost Omens Pathfinder Society GuideOGL