1. Material: copper, chrome-plated alloy 2. Application: welding head 3. Features: the outer layer is chrome-plated, the surface is bright, not easy to rust, sturdy and durable, and has a wide range of applicability 4. Size: length about 4.1 cm/piece 5. Weight: 15 pieces of about 71 grams, 17 pieces of about 81 grams
