Is this a 53x39?

Tech Specs:

Material:

[Arms] Hollow-forged alumium; [Chainrings] forged aluminum; [Bolts] alloy 

Arm Length:

172.5, 175mm 

Gear Ratio:

44 x 56T 

Bottom Bracket:

Requires Dura Ace 7800 Hollowtech II bottom bracket 

Weight:

[inc. BB] 740g 

Recommended Use:

Road cycling 

Manufacturer Warranty:

1 Year