Front chainwheel with non-removable chainring* Number of Teeth - 33T or 38T* Chainring Material - Steel* Removable Chainrings - No* Crank Style - A Arm Crank* Crank Arm Material - Aluminuim* Crank Arm Length - 170mm* 45mm Chain Line (BB Shell) - 122mm* Total Weight - 719g (170mm)