Features :

• 40T is ideal for Internal Gear hub 3 speed Brompton, smaller chain size equals more leisure ride style
• 3 Speed Hub Ratio : 64%, 100%, 157%
  50T = 32T; 50T; 79T (Standard)
  44T = 28T; 44T; 69T
  40T = 26T; 40T; 63T

• Choose 56T if you are fit and need more speed than stock standard size
• Integrated CNC machined with anodisation colour
• 7075 Aero Spec Aluminum with T6 heat treatment, lightwight yet ultra strong and durable
• Black, Silver, Titanium Standard Colours
• Made in Taiwan