[QUALITY MATERIAL] All of our open barrel wire crimp terminal and u shaped connectors are made of quality copper, which ensures high conductivity, anti-oxidation and anti-corrosion for maximum current flow. [EASY TO OPERRATE] Our ring terminals use for various electronic components. Copper terminals can be easily connected to the cable device during operation. Copper terminals are not as thick as other ring terminals. They are lighter and easier to use without heavy duty crimpers. [OPEN BARREL DESIGN] Open barrel design make sure these ring terminal connectors more ideal for solid or stranded wires. The flared opening design could reduce the difficulty to crimp solid wires or stranded wires. Making reliable connections, especially for limited space applications, they are widely used in household appliances, automobiles, electrical industry, mechanical equipment, power distribution cabinets, etc.