10pcs Service or Access Valve 1 or 4andquot SAE x 1 or 4andquot OD x 2.75andquot Stem Core andamp Core Remover Please check the fitment list, part numbers and pictures provided to ensure proper fitment. Welcome to contact us if you have any questions, we give quick response. Specification: new Material: Metal Thickness: 0.023andquot Size: 1 or 4andquot SAE x 1 or 4andquot OD x 2.75andquot Strong and durable. Generally used to have an easy access to the systems for vacuum, charging, pressure check up and other applications. Also known as Schrader valve, or American Valve Consist of a valve stem into which a valve core is threaded. The valve core is a poppet valve assisted by a spring. A valve cap is important on a Schrader valve to avoid entering dirt and jamming it or contaminating the sealing surfaces and causing a leak. The valve cap provided comes with a core remover. Insert tubing or body into the corresponding size line or hole and braze into place with valve core removed during brazing. Can be used on many refrigeration and air conditioning systems to allow servicing, including recharging with refrigerant such as R12 R22 R134 andamp R304 and other popular refrigerants. Packing List (as pictured): 10 x valve stem 1 or 4andquot SAE x 1 or 4andquot O.D. x 2.75andquot stem 10 x valve cores 10 x caps with core remover