●【Size】: 1/4" OD - 7/32" ID (6.5-5.5mm) | Wall Thickness: 0.5mm | Length: 300mm Per Tube, 2PCS ●【Material】: Brass is not easy to corrode. It can withstand high temperature and high pressure, so it can be used in various environments. ●【Advantages】: The surface of the copper tube is smooth without cracks. It is not easy to break, but easy to bend. ●【Application】: Commonly used in DIY projects, hobby, crafts,home improvement, DIY, Electrical, woodworking, engineering, gardening products and more. ●【Convenient installation】: According to your needs, you can use appropriate tools for stamping or welding.