This speaker wire connector set is made of , which can withstand long-lasting use. Features the brass material, which has high durability, not easy to deform. Fine workmanship, practicality. Features -Color: Golden -Material: brass -Size: 2.00X1.00X0.63cm/0.79X0.39X0.25in - Made of high grade brass with tin-plated surface for good electrical conductivity and corrosion resistance. - The insulating sleeve is made of nylon, which is highly conductive, , , and matched with crimp terminals, which is to use. - Available in different sizes: 2.8mm/4.8mm/6.3mm, perfect for 22-14 gauge wires, different sizes can meet your different needs. - Easy to use and check. Simply crimp solder the wire to the wire and with premium heat shrink for a clean, strong and professional connection. - Special design and it is in fine craftsmanship. It is the best replacement for your old, broken one. Package list: 2.8mm male terminals 2.8mm female terminals 2.8mm insulating covers 4.8mm male terminals 4.8mm female terminals 4.8mm insulating covers 6.3mm male terminals 6.3mm female terminals 6.3mm insulating covers