Octavia 1.2tsi with 280mm discs FSIII caliper.

What size tool is required to undo the two bolts located in the sliding pins?

I'm guessing it's a 7mm allen key as 6mm is too small and 8mm is too big.

However, would like confirmation in case its a special or a torx or xzn type so I can order one.

Just a standard 7mm allen key.