Feature 1、1.Optional movable lock nut for easy installation. 2、2.The straight inner or outer teeth are made of american 7/8 teeth (also known as 15/16" Teeth), and the lateral teeth are 1/2" Teeth, which are connected with the spray gun (see picture). 3、3.Avoid scratches, rust, to guarantee long service life 4、4.Brass material. Strong brass construction, made in one piece, ensuring quality and longevity. 5、5.Better than plastic in pressure and burst resistance. Features: 1. Optional movable lock nut for easy installation. 2. The straight inner or outer teeth are made of American 7/8 teeth (also known as 15/16" Teeth), and the lateral teeth are 1/2" Teeth, which are connected with the spray gun (see picture). 3. Avoid scratches, rust, to guarantee long service life 4. Brass material. Strong brass construction, made in one piece, ensuring quality and longevity. 5. Better than plastic in pressure and burst resistance. 6. Multipurpose & easy installation. Specification: Condition: 100% Product material: pure copper, nickel-plated surface Product size: 5.6*3.9cm/2.2*1.5inch Package list: Packing list: flush valve *1 Notice: Please allow 1-3cm error due to manual measurement and make sure you do not mind before ordering.