Introductions:Dear customers, you are in the right place to find a fashionable and practical bike trainer! As a bike enthusiasts, this Fixed 5 Levels Linear Control Magnetic Reluctance Bike Trainer with Front Wheel Riser Block and Quick Demolition is made of high quality iron frame with magnetic wheel material, durable and reliable for you use a long time. No matter you want to have physical stamina training before long distance, warm-up, indoor recreational cycling and winter indoor exercise, it is will meet all you demands! What is more, it is suitable for 26", 27.5" and 700C bike! Don't hesitate anymore. You'll lose the opportunity without your action. Just go and get one!