【Hardness & Durability】Made from premium copper this welding chucks excellent hardness to withstand high intensity use, providing durability and reduced replacement frequency 【Precisions Design】The rose gold copper studs welding chucks features high precisions machining for stable, ensuring welding and consistent results in various applications 【Multiple Size Options】Available in 3 / 4 / 5 / 6 / 810mm sizes, this studs welding chucks provides flexibility for different welding needs, making it a versatile tool for various projects 【Excellent Conductivity】Copper construction ensures electrical conductivity, stable current flows during welding for uniform results and minimized welding defects 【Thread Protection】The unique design prevents thread damage during gripping and releasing, maintaining workpiece integrity and enhancing operational efficiency, Manufacturer: NEWFT