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The revolutionary design of the Challenger II Pro Foam Tip wiring plus earpieces that are fully custom molded to the second bend of your own ear canal make for a top of the line ear piece.
3.5mm Jack
High Quality Transducer Knowles
Fully Custom Self Impression Kit
Each earpiece is custom molded to seal the ear canal which decreases exterior noise and increases the quality of sound

Sampson Racing Communications Custom Impression Kit

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