Figure 1 . On the left, the coupled 4d/2d/0d quiver gauge theory realizing the insertion, in four- dimensional = 2 SQCD, of intersecting M2-brane surface defects labeled by symmetric represen- N tations of rank n R and n L respectively is depicted. The zero-dimensional multiplets are denoted using two-dimensional = (0 ; 2) quiver notation reduced to zero dimensions. Various superpoten- N tial couplings are turned on, in direct analogy to the ones given in detail in [21]. On the right, the ADHM model for k -instantons of the left theory is shown. The model preserves the dimensional reduction to zero dimensions of two-dimensional = (0 ; 2) supersymmetry. We used the corre- N sponding quiver conventions. A J-type superpotential equal to the sum of the U( k ) adjoint bilinears formed out of the two pairs of chiral multiplets is turned on for the adjoint Fermi multiplet. The (cid:13)avor charges carried by the various multiplets are also compatible with a quadratic J- or E-type superpotential for the Fermi multiplets charged under U( n L/R ).