Comparison Shop ... I have several glass cups - can send Sets to compare >> The easiest to clean in the application and the best for home use, glass with rubber! The selection in this set is very extensive - the storage box no really good quality, which probably justifies the price! The pump is average quality of execution! Description is not available in any case for the application! The placement of the pump is at the valves here rather difficult without solving the glass again - the spacer is made of hard plastic and the pump remains a bit stuck and can not be easily solved!