The previous lid and bowl had 3 assembling points. New version has 4 assembling points.
The shape of the holder shaft is now fan-shaped.
Expected Results
- Increased assembling points let Drum sets be assembled stronger & more stabled. (Previous version could bear 450Kgf, but new version can bear up to 600Kgf)
- Enlarged holder shaft can bear pressure of screw in more effective ways.
