Cestus

"'Spike-studded knuckles to increase attack strength.'"

Cestus is a pair of basic knuckles created through Customize by Rena Lanford. 

The Cestus may be equipped by Rena and Bowman Jean.

Shops

 * Roof's tool shop in Mars.
 * Weapon shop Gerencer in Hilton.

Treasure Chests

 * Mountain Palace

Pickpocket

 * Fighting Man in the tavern La Coeur of Lacour in Lacour.
 * Dagor in the Throne Room of Lacour Castle in Lacour after retrieving the energy stone.

Random Drops

 * Treasure Chest
 * Fill-up
 * Fountain Card
 * Lien
 * Jack-In-The-Box