POJJO tubes are unique in two ways: they are ventilated and they have caps so that tools do not fall through. The stainless steel cap wraps around the tube to create a snug fit. However, without additional help, sometimes those caps can get tapped off by the force of the tool going into the tube. There are two ways to keep your caps on longer and even permanently.
Method 1: Tighten the cap
Method 2: Super glue the cap Saronidono .