5 PC. SOLID BRASS QUICK COUPLER SET For American Market 2,Includes 1 female coupler, 1 female plug, and 3 male plugs. 5 PC. SOLID BRASS QUICK COUPLER SET1, For American Market2,Includes 1 female coupler, 1 female plug, and 3 male plugs. 3,Size:1/4"NPT 4,Material:Brass 5pcs Brass Air Quick Coupler Kit