27 C.F.R. § 19.152
(a) Basic Bonds. There are two basic types of bonds: the operations bond, and the withdrawal bond.
(b) Other bonds. In addition to the basic operations and withdrawal bonds, several variations of these bonds are available:
(3) A unit bond covers both operations and withdrawals at one or more distilled spirits plants and operations at any adjacent bonded wine cellars.
(26 U.S.C. 5173)