Lightweight 55mm deep rims, aluminium-composite construction 23mm wide rim for better tyre and aerodynamic performance CNC-machined alloy braking surface All hub and rim surface profiles are optimised for maximum aerodynamic performance Aerolite bladed stainless steel spokes; 16 F (radial) / 20 R (2-cross) Locking internal alloy nipples for increased aerodynamics Tubeless Compatible rim design Highly durable, precision Swiss hub internals manufactured to extremely tight tolerances Weight: 1745g according to the manufacturer