Disk Rotor

[LarryDuff]

Hi all. I got a set of new wheels and need to remove the brake rotors from my old set to put on the new ones (old ones aren't that old only 3 months use).
What sort of tool do I use to remove the round plastic thingy that holds them on the hub?
Pics of old and new attached.

 

[T4tomo]

mine had 6 bolts fitting, but pretty sure

uses a standard shimano cassette tool

 

[si_c]

There are two versions, the ones with the inner splines can be removed with a Shimano Cassette Tool as @T4tomo says, but I think you have the outer splined version, which uses the same size spanner to remove/fit as a Hollowtech II bottom bracket.

 

[LarryDuff]

Thanks guys for your replies, I got a tool this evening.