Item Description: 1.Material:Brass 2.Head:Carbon steel 3.Installation on sandblast machine 4.Diameter of Nozzle Head: 3mm 5.Diameter of Screw: 7mm 6.the widest Diameter :11mm 7.inner hole diameter :1mm color: copper color NET : 90 condition: brand new from Package Contents: 4 * Airbrush Nose Tip Only the above package content, other are not included. Note: Light and different displays may cause the color of the item in the a little different from the real . The measurement allowed error is +/- 1-3cm.