Crank axle for Capo cranks (crank arms sold separately) CNCmachined from aluminum 7075-T6 DUB compatible (28.99mm) Q Factor: Gravel (164mm), Boost (169mm), Cannondale (168mm), XL Wide (174mm), Fatbike (204mm) Weight: Gravel (91g), Boost (93g), Cannondale (95g), XL Wide (98g), Fatbike (134g)