As an Amazon Associate, we earn from qualifying purchases. Home » La Marzocco » MZ_253 La Marzocco Steam Boiler to Lower Sight Glass Tube La Marzocco . MZ_253 Gallery Attributes Brand name, Manufacturer name, ManufacturerLa Marzocco Extra Product NameLa Marzocco Steam Boiler to Lower Sight Glass Tube moq, multiple, tierMinQty11 MPN, SKUMZ_253 qtyInStock0 snippet12 mm pipe, 200 mm length, 1/2" Female British Standard Pipe x 1/2" F BSP. Replace when no amount of work can get it clear. tierPrice143.34 Distributor offers SellerSKUMOQIn stockMultiplePrices espressoparts.comMZ_253111 @ $43.34