Bike Yoke 500psi Shock Pump w/ 2-Step Valve 500psiHigh quality aluminum pump with the ability to handle extra high pressure up to 500psi Two step valve prevents air loss when disconnecting from fork or shock Long stroke design for less pump effort Release valve can precisely lower the pressure 3rd party web sales (eBay, Amazon, etc.) are strictly prohibited by the manufacturer TECH SPECS max psi 500psi