LTWFITTING Bar Production Stainless Steel 316 Barb Fitting Coupler/Connector 5/8" Hose ID x 1/4" Male NPT Air Fuel Water (Pack of 5) Type: Male X hose Barb Tubing ID: 5/8" Thread:1/4" NPT male Materies: Stainless Steel 316. Net Weight: 31.2g/PC Choosing products dimensions and quantities at column of size and colour seperately,price would be more favorable if choosing wholesale.