Shimano Saint M820 2013 Crank Arms. The Saint Hollowtech II cranks are forged premium Duraluminum to form a light weight, extremely strong crank set. Gravity riding has progressed with bikes being lighter and trails getting faster. Saint has evolved with this providing a stiff, strong and durable HollowTech II crank set reinforced in all the ways that most extreme chainsets are not. These industry leading HollowTech II cold forged hollow crank arms have evolved to increase rigidity, reduce weight, and improve strength. These crank arms come complete with a Saint HollowTech II integrated bottom bracket. The design uses a wide bearing placement and a large axle diameter for increased stiffness and efficiency combined with longer bearing cup threads for added durability. Reinforced pedal and crank arm interface with T-nut style steel threaded bushing. Crank arm profile gives excellent ankle clearance, while increasing rock clearance by removing unneeded material from the end of the crank arm.