DUAL SCREWS WITH FLEX PIN DESIGN - GearIT Banana Plug Connectors with Flex Pin Plug Type provide optimum signal transfer from speaker wires. Dual screws keep the speaker wire connection strong and secure. EASY TO INSTALL - GearIT Speaker Plug Connector makes speaker wire banana jack installation easy and is best suited for Spring Terminal Connectors, Speaker Wire Connectors, 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 - Slim Speaker plug accepts speaker cable sizes from 12 AWG, 14 AWG, 16 AWG, 18 AWG, 20 AWG speaker wire inserts. Maximum up to 4mm diameter with jacket. PACKAGE CONTENTS - Each GearIT Speaker Plug pack includes six pairs (6 pairs, 12 pieces) banana plug connectors made of soft pvc rubber jacket and magnetic gold-plated brass pins. All GearIT Banana Plugs come with limited lifetime warranty.