4MM PIN SCREWS SPEAKER PINS - GearIT Speaker Pin Connectors with Pin Screw Type Speaker Wire Plugs provide optimum signal transfer from speaker wires. 4 mm Pin screws keep the speaker wire connection strong and secure. EASY TO INSTALL - GearIT Speaker Wire Plug Connectors make speaker wire installation easy and is best suited for Spring Clips, Speaker Wire Terminals, Speaker Wire, Wall Plate, Home Theater, Audio/Video Receiver, Amplifiers and Sound Systems COLOR CODED GOLD PLATED CONNECTORS - Gold plated speaker plug connector pins resist corrosion for long lasting use and insulated banana plugs to avoid shorting or short circuiting. Positive end for red, and black end for negative speaker wire connector. COMPATIBLE WITH SPEAKER WIRE SIZES - Speaker plug accepts speaker cable sizes from 12 AWG, 14 AWG, 16 AWG, 18 AWG, 20 AWG speaker wire. Maximum up to 4mm diameter with jacket. PACKAGE CONTENTS - Each GearIT Speaker Plug pack includes six pairs (6 pairs, 12 pieces) short banana plug connectors made of soft pvc rubber jacket and magnetic gold-plated brass pins. All GearIT Banana Plugs come with limited lifetime warranty.