I had my doubts whether the punching bag would hold even on the ceiling. Therefore, the eddy with four screws - used as a precaution times 10er dowels and what can I say: KEEPING! The child can leave and slap as he wants his frustration, even my husband punches from & to top, the bag swings back and forth but stays where it should stay .... The material seems very stable and well made - for the price I am more than satisfied.
