Name: Hose connectorFunction: Connecting hoseConnector 1 inner diameter: 32mm, outer diameter: 39mm, length 100mmConnector 2 inner diameter 40mm, outer diameter 48mm, length 100mmConnector 3 has an inner diameter of 50mm, an outer diameter of 58mm, and a length of 100mmConnector 4 inner diameter 32mm, outer diameter 39mm, connecting inner diameter 40mm, outer diameter 48mm, length 100mmColour: blackMaterial: plasticPackage Contents:1 * Hose connection head 11 * Hose connection head 21 * Hose connection head 31 * Hose connection head 4Only the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.