Z-TURN SYSTEM – Screw-on intuitive connection,compatible with Presta and Schrader valves. 2 IN 1 – Convert a directmount pump to a flexible hose pump with inline gauge + Add a flexible hose with visible inline gauge to any pump. IN-LINE GAUGE – Precise inflation, easy to read. Rotary psibar gauge. FLEXIBLE CONNECTION – Easier access to the valve.