Motorola Original HLN8096A: Accessory Retainer Plus Clamp. This is an optional accessory clamp that holds the speaker mic plug into radio to prevent accidentally pulling loose. The clamp has male thread that screws into radio antenna socket. Then screw your antenna into top of clamp's female threadedsocket.
Fits: GP300,GP350,P110,P1225 NOTE: to avoid confusion, for ordering purposes, the suffix letter after the part number is not listed.