Maybe one of these similar products would be of interest:-
Sigma 17-70mm f/2.8-4 DC HSM for Pentax
Sigma 17-70mm f/2.8-4 DC HSM for Sony
USED Sigma 17-70mm F2.8-4.5 DC Macro Lens - Nikon Fit
USED Sigma 17-70mm f2.8-4.5 DC Macro Lens - Canon Fit
USED Sigma 17-70mm f2.8-4 DC C Macro OS HSM Lens - Canon Fit