Check the listing for details. Rollersafe Skate Rollerskis with electric brakes- excellent. Condition: Used. Listed at 750.00 USD. Roller Safe Roller skishttps://mysmartbrake.com/product/roller-ski-skate-with-brakes-basic-package/Roller skis with Hydraulic brakes which are controlled by triggers which mount on swix pole grips.Control the stopping power with an android smartphone app.spare brake pads included.NNN Rotefella bindings attached to built in NIS plate. Light scuffing on bases forks and fenders.#1 wheels (fastest) show minimal wear- still over 97mm left on 100mm wheels.These are the highest tech roller skis ever made. They open up roads that are not skiable without brakes. Warning: It is necessary to apply brakes at the start of a descent and extend the braking foot forward and lean back. As we know feom experience it is easy to stop a roller ski wheel, but stopping a skier takes practice.