Warm Tips: 1. This 30pcs 1/2" brass pex fittings are NOT suitable for PEX-AL-PEX tubing. 2. They are NOT suitable for expander fitting System and uponor/wirsbo expander system. 3. Please do NOT use them with PB tube. Specifications: Item Name: 1/2" brass PEX fittings Item Material: Brass It..