Enormous corkscrew

From DwarfFortressWiki

Enormous corkscrews can be used as components in Traps as well as Screw pumps. They are created out of wood at the Carpenter's workshop, out of glass at glass furnace or out of metal at a forge.

While the enormous corkscrew does the least damage of any trap component, it has the highest critical boost, giving it the highest chance of instantly destroying its' targets' vital organs, resulting in an instant kill. Since the enormous corkscrew is needed to create screw pumps, many players recycle the corkscrews from unneeded screw pumps into serviceable weapon traps. Those interested in more lethal weapon traps should invest in some spiked balls or large, serrated discs.

These have been taken from raw/objects/item_trapcomp.txt:

Name	Damage	Damage type	Number of hits	Critical boost	Wood?
Enormous corkscrew	100†	Pierce	1	2	Yes
† Item quality and the material the weapon is made of can change the damage points of a weapon.