Abstract: A radiator fin (10) has front (11) and rear (12) faces, and is defined by upper (15) and lower (16) edges and opposed side edges (17, 18). The fin (10) has first and second apertures (13, 14), each passing through the front (11) and rear (12) faces and adapted to receive and contact a conductive element (24, 25) for the transfer of heat to the fin (10). The centre of the first aperture (13) is offset relative to the centre of the second aperture (14), such that said first (13) and second aperture (14) centres are not vertically aligned when the fin (10) is installed. The fin (10) is adapted for mounting adjacent a plurality of like fins (10) to form a heat exchange coil (30) for use in a radiator (40).