Sold as each. Use w/copper, aluminum, steel, & plastic tubing where applicable. Use for low pressure applications where a quick on/off operation is desired w/ a generous flow. Rated for service at 30 PSI. Solid bottom & O-ring seal prevents leakage to atmosphere. Used on fuel oil, water, gas, air, & LP gas. 1/4" x 1/8". Manufacturer"s number: AB103CC. Country of origin: United States. Distributed by Anderson Copper & Brass.