Newbie: Identify this connection type.

[ffury10]

Dual XPE 2700 400 watt amp.

4 connection post for speakers.

The binding type uses an Alan wrench to loosen screw upwards.

What type of connector do I use?

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[Sguirrelfeather]

Just twist, or tin, your speaker wires and stick em in there. Once in, snug down the screws. Done.