Feature(may vary by option.)

●Solid construction pins and rubber sleeves provide a secure fit
●Colored Black/Red plastic sleeves maintain proper polarity
●Screw type connector fittings, no soldering required
●Posts are gold-plated copper (non-magnetic) to resist corrosion and minimize signal loss
●Easy to install and most connections designed to accept bare wire connections (these pin plugs can fit approximately 10-12AWG/4mm² wire)

[Four red four black]

[2 red and 2 black]

Description

Gold Plated Mini Plug Pin Plug Speaker Terminal Copper 2mm Banana Plug Set

First, remove the black and red cover with your finger.
Since there is only 1 screw, you can loosen the screw slightly, then insert the speaker cable into the inside and tighten the screws.
(Check if the cable does not fall out, or the cable is securely in contact with the metal fitting.)