Ky. Rev. Stat. § 45A.300 (2017). Cooperative purchasing

(1) Any public purchasing unit may either participate in, sponsor, conduct, or administer a cooperative purchasing agreement for the acquisition of any supplies, services, or construction with any other public purchasing unit or foreign purchasing activity, in accordance with an agreement entered into between the participants. This cooperative purchasing may include, but is not limited to, joint contracts between public purchasing units and access by local public purchasing units to open-ended state public purchasing unit contracts.