Gauge Type: Available as Analog (dial-based, often battery-free) or Digital (backlit display, requires batteries).
Gauge Head: Large 2-1/2" dials are common, often protected by a rubber shroud.
Trigger Mechanism: A trigger or lever allows for precise, single-handed inflation control.
Chuck and Hose: Usually features a swivel hose with a dual-head or locking air chuck for easy access to valve stems on cars, trucks, and bikes.
Deflator Valve: A built-in button allows for easy, manual reduction of over-inflated tire pressure.
Pressure Range: Typically rated for 0-100 PSI, 0-170 PSI, or up to 230 PSI for heavy-duty applications.