Toppump TB2 Pro Adapter-ring

The Toppump TB2 Pro comes with a plastic (ABS?) screw-in adapter into which the extension hose is screwed.This extension hose is required when using a Schwalbe Click Valve adapter, and it is also necessary when using TPU inner tubes.The adapter itself has a plastic thread, while the hose is fitted with a brass thread. It is therefore not surprising that the plastic thread can be easily damaged.This is a replacement part; the rubber insert from the original part must still be used.