Made of 2 overlapping aluminium parts, which can be pushed in and out of each other in telescope fashion to match the individual length / volumes of the pipettes in question for sterilisation and storage. Depending on the length of pipettes, the upper part is more or less covering the lower part of container.
Only one container size for all standard pipettes of 280 to 420 mm (RS) and for all short- or pasteur pipettes of 145 to 235 mm (RK) length, each.