The present invention relates to bi-specific antigen binding molecules and associated fusion proteins and conjugates. In particular, the present invention relates to bi-specific antigen binding molecules with specificity for both receptor tyrosine kinase-like orphan receptor 1 (ROR1) and epidermal growth factor receptor (EGFR) and associated fusion proteins and conjugates. In a further aspect, the present invention relates to conjugated immunoglobulin-like shark variable novel antigen receptors (VNARs).