EK-AF Extender G1/4 is suitable to extend port from block in order to fasten larger fittings that would normally be obstructed by hardware or you simply with to extend your G1/4 port.Made from black-plated CNC machined brass. Sealed with quality orings.These Extenders can be either tightened by hand or by using Allen Key 9mm (not included, available for separate purchase).Technical data:- Threading: G 1/4\"- Thread length: 4mm- Diameter: 18.8mm- Height: 20mm- ROHS 2.0 compliant!