JB Kettlebells are hollow steel with a black finish. You fill them with steel or lead shot depending on your desired weight (lead is denser than steel so for the heaviest weights you need lead shot).

Only three JB Kettlebells cover all your kettlebell needs from 6kg to 50kg.

One empty 6kg JB Kettlebell can be filled in 1kg increments up to 12kg with lead shot - equivalent to buying 7 individual solid kettlebells so check out what 7 solid kettlebells would cost you.

One empty 12kg JB Kettlebell can be filled in 1kg increments up to 32kg with lead shot - equivalent to buying 20 individual solid kettlebells so check out what 20 solid kettlebells would cost you.

One empty 16kg JB Kettlebell can be filled in 1kg increments up to 50kg with lead shot - equivalent to buying 34 individual solid kettlebells so check out what 34 solid kettlebells would cost you.