Opening: 12.7 mm = 1.27 cm = 0.5 inches = 1/2 inches Reliable hands-free filling, simply lift to stop. High capacity filler for the volume winemaker (25 bottles in 8 min.) The 1/2" acrylic tube fits a 7/16“ (11mm) x 9/16" siphon hose.
Opening: 9.5 mm = 0.95 cm = 0.37 inches = 3/8 inches Reliable hands-free filling, simply lift to stop. Most popular size for wine and beer The 3/8" acrylic tube fits a standard 5/16" (8mm) x 7/16" hose.