Product details:

Shimano Deore Hollowtech II Crankset is designed for efficient power transfer and smooth shifting. Composite Chainring with close step tooth profile for smooth shifting. Single spike structure for stable shifting. Optimized gear combinations and ratios.Efficient power transfer
HOLLOWTECH II crankarm with 4-arm construction (70o)
Composite chainring
Optimized gear combinations and ratios for a wide range of riding styles
Smooth shifting rhythm maintains speed and acceleration over challenging terrain
Close step tooth profile for smooth shifting