2 tire valve caps with pressure indication

fA tire valve cap with a built-in pressure indicator consisting of a housing structure
with a spring-loaded diaphragm piston exposed to the tire pressure, the axial
movements of the hub of the diaphragm piston being converted into angular movements
of a pointer shaft and pointer member through a helical cam connection.
The position of the fixed pointer is adjustable, and the pointers are radial protrusions
whose position can be ascertained visually or by finger touch
feature: Easy to install Bright Flashing Light Value-added safety product

A tire valve cap with a built-in pressure indicator consisting of a housing structure with a spring-loaded diaphragm piston expo

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