Three-point spraying, anti-retraction, quick coupling, large four- hole turbine with push button. Three type head: standard head-series ad; medium head-series az; mini head-series ax, 310000rpm, push botton, 360 degree rotatable quick coupling with build-in anti-retraction system. (2 holes & 4 holes available) Three-point spraying, anti-retraction, quick coupling, large four- hole turbine with push button. Three type head: standard head-series ad; medium head-series az; mini head-series ax, 310000rpm, push botton, 360 degree rotatable quick coupling with build-in anti-retraction system. (2 holes & 4 holes available)