Six piece M Style swivel coupler and plug kit includes various couplers, plugs and fittings. M style couplers have a 1/4" basic flow size and air flow of 40 SCFM. These Kwik Change couplers and plugs will interchange with all manufacturers who comply with the dimensional requirements of military specification MIL-C-4109. M style couplers are made with case hardened steel and have a maximum pressure of 300 PSI.
Abbott Rubber Technical Data Sheet