Delock Products 65459 Delock Headset Adapter 1 x 3.5 mm 4 pin Stereo jack female > 2 x 3.5 mm 3 pin Stereo jack male (CTIA pin assignment)
StarTech MUYHSMFFADW 3.5mm 4 Position to 2 x 3 Position 3.5mm Headset Splitter Adapter M/F - White Headphone Microphone Splitter - 4 pin / 4 pole - Newegg.com
Headset adapter with headphone/mic plugs - Audio Cables and Adapters
General Aviation Headset to 5-Pin Adapter – Rugged Radios
Retevis Two Way Radio Earpiece Adapter,2 Pin to 3.5mm Headset Adapter H-777 RT21 RT22 RT27 RT7 H-777S Kenwood Walkie Talkies(5 Pack) : Electronics - Amazon.com
ADAPTOR TO CONNECT MOTOROLA 2 PIN EARPIECE TO 1 PIN MOTOROLA TLKR RADIO | eBay
Klein M1-3.5mm Female Adapter with Motorola 2 Pin Connector
1 Pin 2.5mm Plug Z Tactical Bowman Elite II U94 Headset Cable Adapter PTT for Motorola T6200C Cobra MT600 Gear Talkabout Radio|ptt u94|ptt motorolaptt cable - AliExpress
ADAPTOR TO CONNECT MOTOROLA 2 PIN EARPIECE TO 2 PIN ICOM RADIO | eBay
Tebru U94 2-Pin PTT Tactical Headset Adapter For EP450 GP3688 DEP450 - Walmart.com
Tactical headphone headset PELTOR PTT Push To Talk Z112 Headset Adapter 1 2 Pin Radio Airsoft military radio use|headset peltor|radio airsofttactical headphones - AliExpress
Bluetooth Headset & Radio Adapter Kit for Safety/Construction - 1-2 Pi – Comm Gear Supply
Z-Tactical U94 Headset Cable Adapter & PTT for Motorola 1-Pin 2.5mm Radio | eBay