Maximal Power universal FBI style BLACK twist-on replacement acoustic ear bud tube coil for two-way radio surveillance headset earpiece fits with MOTOROLA, KENWOOD, ICOM, VERTEX and/or other 2-way radios. This acoustic coil includes a mushroom-shaped ear tip, a tube and a twist-on connector. ***NOTE: Amazon.com is the only authorized dealer selling Maximal Power brand products. All other marketplace vendors are selling counterfeit products that do not perform the same, and/or are not covered by our Maximal Power Warranty.