The first time yesterday I had the metal handle in his hand, which is quite simply slipped out of the plastic tube, as only a small groove to hold the handle, an absolute bad design. There's durable every Chinese plastic bicycle pump. Now I glued the metal handle with superglue in the plastic tube and subjected to a rinse in the dishwasher after hardening the whole construction. Let's see how long do the part, probably soon crack the plastic tube ...