I have a set of Viper counter-rotating 14-3/4 x 17p props with TBX interchangeable hubs. They are currently using a 15 spline (evinrude e-tec) hub.
Used once, great shape.
$400 for the pair. Would prefer local pickup in south MS/LA but would entertain shipping them at buyers cost.
Paypal or Venmo preferable.