1) Models: PCF 2) One-touch push-to-connect configuration allows an instant tubing connection 3) Soth-edge release sleeve design facilitates a quick tubing disconnection 4) Aesthetically pleasing nickel-plated metallic optional feature ensures anti-corrosion properties for an extended product life 5) Pre-applied sealant on all external threads eliminates the additional sealing requirements 6) Internal and / of external flat-to-flat hexagonal configurations for both metric and inch specifications allow a proper tightening or directional orientation upon installation by using an L key or Allen wrench for the applicable model typesmor