The item has 14-28 Teeth (14-16-18-20-22-24-28T) and it is 7 Speed freewheel. Our speed freewheel is made of premium metal that is highly corrosive, powerful, and long-lasting. The high-precision internal thread ensures a tight connection with the bicycle hub and operates smoothly; the rotation is quiet and smooth; it offers quick riding speed and requires little effort. Small size; simple to mount on a bicycle. This cassette for bike rotates quietly and smoothly, and it is simple to install. Close connection with the bicycle hub is ensured by a high precision internal thread. A wave-shaped slide groove in the chainring of the free wheel allows for a smooth and simple shifting experience while riding.Our goal is to give all outdoor enthusiasts a comfortable riding experience. Please feel free to contact us if you have any concerns. We will offer you excellent service.