LTWFITTING Bar Production Stainless Steel 316 Barb Fitting Coupler 3/8" Hose ID x 1/2" Female NPT Air Fuel Water (Pack of 5) Type: Female X hose Barb Tubing ID: 3/8", Thread:1/2" NPT female Materies:Stainless Steel 316 Net Weight: 34.40g/pc Choosing products dimensions and quantities at column of size and colour seperately,price would be more favorable if choosing wholesale.