Performance Tool M525 Digital Tire Inflator
The Performance Tool M525 is a pistol-grip tire inflator with a digital gauge, made for setting tire pressure from a shop air supply. The back-lit readout is accurate within 0.5 psi, so the pressure you set is the pressure you get, and a built-in bleed button lets you drop an overfilled tire to the right number without removing the chuck.
Key Features
- Digital gauge reads 0 to 150 PSI with accuracy within 0.5 psi
- Back-lit blue LCD display is easy to read in a dim shop or at night
- Push-button readout switches between psi, kPa, bar and kg/cm2
- Built-in bleed button for lowering tire pressure
- Flexible hose with clip-on chuck and a quick-connect inlet plug
Specifications
- Pressure range: 0 to 150 PSI
- Accuracy: within 0.5 psi
- Display: digital, back-lit blue LCD
- Measurement units: psi, kPa, bar, kg/cm2
- Air inlet: 1/4 in. NPT
- Power: 2 AAA batteries (included)
- Weight: 1.10 lb
Important Purchase Notes
This is an inflator gauge, not a standalone pump: it needs an air compressor or shop air supply to fill a tire. Included in the package: the inflator, 2 AAA batteries, a 1/4 in. male inlet fitting, and a valve core tool.
Frequently Asked Questions
Does the M525 need an air compressor?
Yes. It connects to a shop air supply through its 1/4 in. NPT inlet and controls and measures the air going into the tire. It does not pump air on its own.
Are the batteries included?
Yes, 2 AAA batteries are included to power the digital gauge.
Can it show pressure in units other than PSI?
Yes. The readout switches between psi, kPa, bar and kg/cm2 with a push of a button.
Performance Tool builds specialty tools and shop equipment for professional technicians and home garages alike. SiraWeb stocks the Performance Tool line with the specifications shown on this page, so you can order the right tool the first time.
