FESTO Pressure Hoses & Connectors Y-piece 612313 - FESTO 153156, Festo manufactures the QSY-12-10 Y-piece, designed for pneumatic systems with pipe diameters of 10 mm and 12 mm. This durable connector facilitates efficient air distribution in various industrial applications. It is commonly used in automated machinery for reliable and leak-proof connections. FESTO 153156 Y-piece Pipe Diameters: 10 mm/12 mm 1pc