Shimano Deore XT FC-M8150 Crank Arm Set

Hollowtech II: Balanced between stiffness, strength, weight, and performance, the concept of HOLLOWTECH II technology is focused on producing a superior crankset which will maximize a rider’s power transfer. The rigidity of the crankset ensures pedaling efficiency while its weight, a key element of the crankset, you want light, aids in cycling longer distances over which the rider needs to pedal more.