Left Ear and Right Ear Medium Size Silicon Ear pair 3.5mm Listen Only Earphone with hearing protection and sound press certification (Total Length: 33.5" - unstretched) Great for use in crowded or loud environments Open Ear Insert Earmolds are designed for use on two-way radio acoustic tube type surveillance earpieces This is designed to fit Motorola, Kenwood, Icom, Vertex, Ritron and Maxon radios and Remote mic