1.Many Specs. for your choice, R22,R134A,R410A, etc. 2.Material:Steel 3.One-point cylinder valve 4.Strong colorful carton box HVAC,refrigeration, empty disposable refrigerant cylinders1.Material: Steel2.Cylinders to charge into the following gases: R134A/R404A/R410A/R22/R407A/R407C/R408A/R409A,Etc.3.Valve: one-port cylinder valve gas cylinder