Micron engineering corporation offers sqc series, single shut-off coupler. A sqc coupler. A sqc coupler designed to be completely interchangeable with other styles of sockets and plugs now in the field. An entirely automatic socket allows the use of other different plug styles within the series. For use with compressed air and end connections up to 1/2" size are available. Easy, automatic push-to-connect designs provide instantaneous connection of airlines. Sleeve guard feature is an extra bonus in addition to higher flow rates. Specifications: material of construction - steel with zinc chrome plates, alloy aluminium with electroless plated/anodized, stainless steel; construction of seal - viton, epdm, hnbr, etc; working pressure - 150 psi; bursting pressure - 250 psi; sizes - ¼", ¾" and ½", application - compressed air; and interchangeability.