can anyone confirm the size of the above?

i have 2 sets of calipers, but they have different size bolts. i am interested in the smaller size ones and need to buy longer ones as i'm spacing the calipers out for thicker discs.

the head is marked with "VERBUS" and "11.9", and i believe that they are M9 x 1.25. can anyone confirm their thread size, and suggest a supplier for a longer (by 10mm prefferably) set?

thanks