Based on this product's specifications, here are some alternatives and similar models
Inflator Pump Enero standard for SUP boards 2.2L, max 25 PSI
Summary description:
Manual inflator pump Enero designed for stand-up paddle (SUP) boards with 2.2 L air chamber capacity and a maximum pressure of 25 PSI. Provides straightforward single- or dual-action inflation (manual operation depends on model), compatible with common SUP valves for on-water inflation and maintenance. Suitable for recreational paddlers who need reliable board inflation at home, on the beach, or during trips.