Meters -10 Pcs Nipple Fitting Inner Thread Quick Adapter Highlights Generic Brand 10 Pcs Nipple Fitting Inner Thread Quick Adapter Description: Brand new and high quality. Brass one-way/brass valve, durable. Thicken brass horizontal check valve, pressure resistance. Easy to install and replace. Mainly use for one-way fluid tubing, automatically prevent fluid from flowing back. specification: Material: Copper Size Length: Approx.27mm/1.06inch, External Thread Diameter: Approx.9.5-10mm/0.37-0.39inch Size Length: Approx.30mm/1.18inch, Thread Diameter: Approx. Approx.12mm/0.47inch Size Length: Approx.28mm/1.1inch, Thread Diameter: Approx.9.5mm/0.37inch Size Length: Approx.28mm/1.1inch, Thread Diameter: Approx.12mm/ 0.47inch Size Length: Approx.28mm/1.1inch, Thread Diameter: Approx.9.5mm/0.37inch Size Length: Approx.28mm/1.1inch, Thread Diameter: Approx.12mm/0.47inch The Package includes: 10pcs check valve