  The entropy of the supersymmetric D2-D4-P black hole comes at weak coupling
from D2-brane strips stretched between parallel D4 branes and carrying momentum
waves. We use the DBI action of D4 branes to construct two pieces of plumbing
that enter in the construction of these microstates. The first is a
semi-infinite D2 brane ending on a D4 brane and carrying a momentum wave along
the common D2-D4 direction. The second is a non-Abelian solution to the 5D
maximally-supersymmetric SU(2) Super-Yang-Mills theory describing a
momentum-carrying D2 strip stretched between two D4 branes. The solution
without momentum is the same as the 't Hooft-Polyakov monopole, and the fields
that carry the momentum can be added without changing any of the fields of the
monopole.
