Bottom bracket identification

[Pigmy13]

Hi, I'm trying to remove the bottom bracket from my BTwin Ultra. It's sold with a 105 groupset and I've bought the parktool BB removal tool but when I remove the crank, the surfaces are all completely smooth - there is no lugged ring for the notches of the wrench to grip onto. I've attached a few photos. Does anyone know how I get this little puppy out?

Thanks

 

[accountantpete]

You have this one
http://www.chainreactioncycles.com/shimano-bb71-road-press-fit-bottom-bracket/rp-prod61803

There are various tools - this one looks the easiest

View: https://www.youtube.com/watch?v=nxeBGWBtq6M

 

[Pigmy13]

That's brilliant thanks. What can be better in life than needing a new bracket and getting to buy a new tool as well? I've got both on order now. Mrs pigmy not quite as happy!!

Thanks for your help