1. Cast Iron Kettlebells: These are the most common type of kettlebells and are made of solid cast iron.

2. Competition Kettlebells: These kettlebells are designed for use in competitions and are all the same size and weight, regardless of their weight.

3. Vinyl Coated Kettlebells: These kettlebells have a vinyl coating that helps to protect them from damage and makes them easier to grip.

4. Adjustable Kettlebells: These kettlebells allow you to adjust the weight of the bell by adding or removing plates.

5. Steel Kettlebells: These kettlebells are made of steel and are often used in commercial gyms because they are more durable than cast iron kettlebells.

6. Rubber Coated Kettlebells: These kettlebells have a rubber coating that helps to protect them from damage and makes them easier to grip. They are often used in CrossFit workouts