These are Speaker Cables (marked "High Current Speaker" on the jacket), not instrument/guitar cables. They are designed to connect an amplifier head to a speaker cabinet, not a guitar to an amp.

-Model: Monster Prolink Performer 500
-Type: Speaker Cable Ultra-Wide Bandwidth High Current Speaker
-Connectors: 1/4" to 1/4" Gold-plated connectors.
-Length: 10 feet