For auction on e-bay these NOS Shimano Dura ace 7402 side pull brake caliper's .  They have some slight storage wear but have never been mounted so I have listed them new/other  .  They are shallow depth  with Allen key fitting . The state of art road bike brake from 1984  onwards used by the Dutch TVM squad , Swiss Cilo Team and the American 7/11 team.  A great addition to your Dura ace group . Thank you for looking and best of luck if you decide to bid .  I will ship worldwide.