There seems to be a mistake on the wood bell description, it says that the wood bell reduces a 2% of the production time but it actually reduces a 5% - 6% of time, somewhat around the double than the stand bell. It used to take to me around 52 minutes to make 200 big grapes with an air conditioner, 51 minutes with an air conditioner + stand bell, and 48 minutes using an air conditioner + stand bell + wood bell.

Hence it is impossible that the wood bell reduces less time than the stand bell. This makes sence considerating that the wood bell takes longer to make and require more complex materials.

Please someone verify this and correct the description if needed.