The 1/8-in MNPT x 3/8" Hose Barb fittings pack is the replacement fittings for VaporTrap™ Solvent Waste System's fittings. It includes (10) 1/8-in MNPT x 3/8-in hose barb fittings. These tube fittings secure waste tubes to carboy providing the closed system necessary to prevent spills.