To withstand extreme punishment and wear and tear, it is advisable to purchase a kettlebell that has been manufactured from a Single Cast ( One Piece Mould ).
In other words, the handles have not been welded onto the spherical main body (Bell) of the kettlebell (Two Stage Manufacturing Process).
Welded handles make the ketllebell susceptible to eventual breakages,
Two stage manufacturing also tends to create uncomfortable seams and burrs, that can seriously hinder your Kettlebell workouts. Where friction is created between the hands, forearms and handles, resulting in bad blisters, rips and general discomfort.
It gets worse the heavier the kettlebell you work with.