SRD:Ki Focus

Ki Focus: The magic weapon serves as a channel for the wielder’s ki, allowing her to use her special ki attacks through the weapon as if they were unarmed attacks. These attacks include the monk’s stunning attack, ki strike, and quivering palm, as well as the Stunning Fist feat. Only melee weapons can have the ki focus ability.

Moderate transmutation; CL 8th; Craft Magical Arms and Armor, creator must be a monk; Price +1 bonus.