This one is about 14mm and even though in my Toshiba quosimo the hdd spacing is quite thick it didn't fit so I thought I can install it instead of the optical drive but I didn't manage to find the trey which is thick enough..

These HD are small width 2.5“ but are not the usual thin 9.5mm thickness but are about 12.5mm. Check if that fits your laptop first before buying.