This is a shock nitrogen-filling kit from Schmidty Racing Suspensions. Kit includes a Uniweld RHP400 (0 - 400 PSI) regulator and comes standard with 8' long rubber hose. The rubber hoses are rated to 3250 PSI.  The hose has a standard air chuck on the end and can be used to fill tires or can be used to apply nitrogen to fill tools or chambers that have a standard small bore schrader valve. The chuck on the end is mounted to the hose via a swivel fitting that rotates 360 degrees to get into any position without twisting or kinking the hose.
 
Specifications:
RHP400 Regulator: 0 - 400 Max PSI
Air Chuck: 0 - 100(Max pressure capacity of air chuck is100 PSI)