No fancy gizmos. No wires. No fuss. If you're looking for an easy way to ride your bicycle indoors, call off the search - you've found it.Linear resistance boosts workout intensity to match each pedal stroke and gear clickEccentric leveling feet allow for easy adjustment on uneven surfacesComes on a sturdy, foldable frameAdjust tyre fit to resistant unit with a convenient turn knobResistance unit roller allows for 7c, 26, 27 and 29 wheel sizes - up to a 2 tyre This trainer is designed to fit common road and mountain bike frames with included steel quick release skewer and is compatible with rear dropout spacing: 12mm, 13mm and 135m---