Features: The material is brass, which has better conductivity and longer service life. Uses: Suitable for various environments such as electricians, household appliances, power distribution cabinets, and power distribution boxes. A variety of convenient terminals connectors provide everything you need for quick solderless electrical maintenance in your home, garage, workshop or outdoors. 150pcs Rings Terminals with various sizes, suitable for various connection needs, convenient and fast. It has the characteristics flame retardant, high for protections level, and good performances. Specifications: Material: Brass Quantity: 150pcs Box size: Approx. 12.8x6.5x2.3cm/5.04x2.56x0.90inch Package Includes: 50Pcs 3mm 20Pcs 4mm 20Pcs 5mm 20Pcs 6mm 20Pcs 8mm 20Pcs 10mm note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.