La Marzocco cross fitting to brew boiler tube (3/8" F x 1/4" F flare). 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: Fittings: 3/8" F x 1/4" F flare Compatibility: La Marzocco models Installation: Direct tube replacement Recommended for qualified technician. Pro tip: Ensure proper flare connection for leak-free seal.