Check the listing for details. 8 Pcs PC4-M10 Straight Through Fitting for 3D Printer, 2x4mm Tubes, Black. Condition: New. Listed at 15.32 USD. What is it?Pneumatic fittings are connection accessories used in the pneumatic system, often used to connect the interfaces of pneumatic equipment. In 3D printers, pneumatic fittings are usually used to connect tubes related to cooling systems or other pneumatic components.What will I get?Pneumatic Tube FittingsSize: 6.8 x 9.7 x 18.9 mm / 0.27 x 0.38 x 0.74 inch (ID x OD x L);Material: H59 Copper;Model: PC4-M10;Mounting Type: Straight Through Push to Connect;In the package of: 8 Pcs x 3D Printers Pneumatic FittingsAre there any advantages of this product?Easy Installation: The push-to-connect design allows for quick and tool-free installation, making it great for fast setup and maintenance.Outstanding Durability: Made from elected H59 brass material, the fitting provides excellent strength, resistance to corrosion, and long service life.