ITEM NAME:Car Accessory Pressure Regulator Hose Barb Adapter Easy Install Fuel Pump Features: It is for ONE -6 ORB to 5/16" hose barb adapter. 6ORB (O ring) adapter fitting with O ring to a 5/16" single bead hose barb. Made from 6061-T651 aluminum with black type 2 anodize. These have many uses including fuel pumps and fuel pressure regulators. When you want to attach a simple hose / hose clamp to any -6 O ring port you can use this adapter &;nbsp; Specification: Color: black Material: aluminum Thread size: for -6 is 9/16-18 UNJF &;nbsp; Package include: 1pc x hose barb adapter &;nbsp; Notice: Due to the light and screen difference, the item's color may be slightly different from the pictures. Please allow 0.5-2cm differences due to manual measurement..It is for ONE -6 ORB to 5/16" hose barb adapter. 6ORB (O ring) adapter fitting with O ring to a 5/16" single bead hose barb. 1pc x hose barb adapter. When you want to attach a simple hose / hose clamp to any -6 O ring port you can use this adapter.