This pump is not for tires, but for suspension forks and rear shocks (on mountain bikes). In other words, for air suspension systems that require very high pressure.

Key features:
Pressure gauge: Allows you to set the pressure very precisely.
High maximum pressure: The packaging states up to 300 psi (~20 bar) – much more than standard tire pumps.
Fine adjustment: Such pumps allow for very controlled air release so you can set the perfect suspension pressure.
Screw-on connection: Screws directly onto a Schrader valve (typical for shocks).