RollerSafe - wheelchair disc brake

• Integrates disc without removing original parts (wheels, axle, quick release) • Reduces width by 2-4 cm and weight by 2-4 kg compared to drum brakes • Removes cabling to the brake lever, easier to mount and disconnect (during travel, etc) • Uses standard wheels (with steel spokes) • Easy mounting across different chair models (foldable/rigid) • Hydraulic parking brake