Impact AT2, QD Acoustic Tube Ear Option for Gold Series Quantity in Basket: None Code: AT2 Price: $26.40 Shipping Weight: 1.00 pounds Quantity: Impact AT2, High Quality QD (Quick Disconnect) Acoustic Tube, Field Repairable Transducer, Rubber Eartip and Clothing Clip. (Used on All GOLD Series 1, 2 & 3 Wire Kits).