This is the 4.8MM 16 wire USB 3.1 type C Cable Specification datasheet.
This cable includes 8X30AWG coaxial(Silver plated wire)+1PX32AWG+4X34AWG+2X24AWG.TPE Jacket. the 1 Pair 32AWG is for USB 2.0 signal.
From us,there are 8*34AWG coaxial and 8*36AWG coaxial version optional with different diameters
This is not the smallest diameter USB 3.0 USB3.1 cable we make,visit us or contact us for more flexible USB bulk cable