This groupset Shimano Dura-Ace R9270 Di2 2x12sp includes:

Crankset: Shimano Dura-Ace FC-R9200

Cassette:Shimano Dura-Ace CS-R9200, 12sp

Chain: Shimano 12sp

Front Derailleur:Shimano Dura-Ace Di2 FD-R9250

Rear Derailleur: Shimano Dura-Ace Di2 RD-R9250

Shift Levers:Shimano Dura-Ace Di2 ST-R9270

Brakes: Shimano Dura-Ace BR-R9270

Disk Rotors: RT-CL900 160mm / RT-CL900 140mm

Battery: Shimano Di2 BT-DN300Charger: USB Type A Charging Cable EW-EC300

Di2 components: 2 x EW-SD300 Di2 electronic wiring cables

Alluminium

bottom bracket not included