The materials are in order, because the wooden handle is stable and fits comfortably in your hand, as well as the bell is at first glance in order. The plastic used is thick enough so that the thread used the wood handle fits well and stable. In my opinion, you would have the two parts can connect with some glue, so that they remain attached still stable even after prolonged use. A separation of handle and bell I think just at this price is not necessary, because to go one or another part of broken, there is anyway no items but you can buy a complete replacement.
One more thing to suction: dry placed on a glass plate, the suction is maintained about 10-15 seconds until the bell straightens again. With a little water to the 1 cm thick lip there are then about 30 seconds. For normal application, this suction is sufficient in my opinion.
