Parking brake rubber grommet size?

[Sobek]

Hey guys. I've got that insanely annoying squeak / creak from my parking brake grommet having failed, but I haven't had a chance to get under there and measure it yet. I can just pop down to my local hardware store and pick one up, but does anyone have the inner / outer dimensions for it? Beats ordering one online or something. I ran the part number for it and nowhere I could find mentioned the actual size of grommet used... annoying.

Cheers! :cool