Zeadio Air Tube Earpiece Headset for Motorola Multipin Radio Gp140 Gp320 Gp328 Gp329 Gp338 Gp339 Gp340 Gp360 Gp380 Gp640 Gp650 Gp680 Gp1280 Etc. Excellent for use in police, military, nightclubs, bars, paintball, security,restaurants, hotels, bouncer, warehouses, and noisy environments. Durable and thick cable, designed for tough environment This headset is for Motorola radios that require an oval side mount pin connector with retaining screw