SRD:Ring of Weaponbreaking

Weaponbreaking
A ring of weaponbreaking is identical to a ring of ironskin, and has one additional power. Any weapon that successfully strikes the wearer must also make a Fortitude saving throw (DC 20) or be shattered into pieces.

Caster Level: 20th; Prerequisites: Forge Ring, Forge Epic Ring, iron body, shatter; Market Price: 600,000 gp; Cost to Create: 300,000 gp + 16,000 XP.