"A curious double-edged sword crafted using Sheikah technology. It was originally made for Hyrulean knights unfamiliar with single-edged blades."
— In-game description

The Edge of Duality is an item from The Legend of Zelda: Breath of the Wild. It is a Sheikah sword with a base attack rating of 50 though this may be increased by certain weapon bonuses. The Edge of Duality is a two-handed double-edged sword which was crafted using Ancient Sheikah technology. It was originally intended for Knights of Hyrule unfamiliar with single-edged blades traditionally used by the Sheikah tribe. Unlike the Royal Guard weapons created using Sheikah technology to combat Calamity Ganon, it does not suffer from low durability.

The Edge of Duality has a brown blade with a blue and gold handle and a black cross guard sporting a Sheikah emblem outlined in gold and filled with red and blue. The blade is carried across Link's back in a black, torso length, open ended, sheath which holds the blade just below the cross guard. This also shows a gold Sheikah emblem, though it is only filled with the color blue.

in Princess Zelda's Room in Hyrule Castle, a Moblin can be found wielding one which it drops when killed (unless an Ancient Arrow is used) or hit with a Shock Arrow. This Moblin is resurrected every Blood Moon.

See also