The first delivery was faulty, here is the inner part of the ball was so moved upon inflation that you no longer came to the valve. The replacement was within two days there, just great service.
I am not a boxer, so I can tell the quality of Punchingballs as boxing tools not much, but processing is Ok, after two weeks of use are both ball and gloves without defect. As has been written can be rattling means wrapped around the inner rods tape (one sees no longer) park.
Installation is easy, "tool" is attending, a dedicated 14er wrench and Phillips screwdriver is but definitely advisable, since you are using the supplied "universal tool" the finger breaks.
The stand is very "stable", 90% full with sand you do not manage to bring it to wobble
Conclusion: great toy, good value for money.