La Marzocco boiler to hot water valve supply tube (310 mm, 6 mm tubing, 3/8" F x 1/4" F, curvy). Fast shipping when in stock. When out of stock this becomes a special order item and typically requires 2-4 weeks for processing prior to shipping. Specifications: Length: 310 mm Tubing: 6 mm Fittings: 3/8" F x 1/4" F Compatibility: La Marzocco Linea Classic, FB70, Linea PB Installation: Direct tube replacement Recommended for qualified technician. Pro tip: Route carefully to avoid kinks.