Choose a 19 teeth freewheel if you want to have an easy gear that is better for beginners and for hilly areas. Choose a 17 teeth freewheel if you want to have a strong gear that is perfect for fast riding in flat areas. Choose a 16 teeth freewheel for training and racing. The smaller the freewheel the harder your gear. (Suggestions are made for a 48T chainring)
Freewheel sprocket made of Cr-Mo steel that fits all standard singlespeed flip flop hubs.