ZTTO Silver 10 Speed Flywheel Bike Cassette for Road Bicycle Color:11T-25T • 1 x High Temperature

• 1 x High Temperature Resistance Insulation Silicone Pad

• 1 x USB: USB-A (for firmware updates/LUT file uploads)

please do a waterproof test and check for damaged parts

• Battery: 2200mAh lithium battery

• Motors provide strong vacuum suction (5500PA)

ZTTO Silver 10 Speed Flywheel Bike Cassette for Road Bicycle Color:11T-25T • 1 x High TemperatureFeatures & Specifications Made of quality steel material, with nickel chromium treatment, high temperature resistance, corrosion resistance, no deformation, providing long term durability High precision teeth ensure close connection with bicycle hub for smooth rotation and easy maintenance The hollow design reduces weight and makes your riding easier Use it to directly replace your old or broken flywheel. Easy to install A wonderful accessory for most