Maybe one of these similar products would be of interest:-

Sigma 258306 105mm F2.8 EX DG OS HSM Macro Lens for Nikon DSLR Camera , Black

Sigma 258101 105mm f/2.8 EX DG OS HSM Macro Lens Canon DSLR Cameras, Black

Sigma 24-70mm F2.8 IF EX DG HSM Zoom Lens for Sigma Digital and Film SLR Cameras

Sigma 8mm f3.5 Circular Fisheye EX DG For Sigma Digital & Flim SLR Cameras

Sigma 200-500mm f2.8 EX DG Telephoto Zoom lens for Sigma SA