This is a speaker coupler for a Hiace 200 series. It allows for easy wiring when replacing the factory speakers with a plug-and-play connection. Without this conversion coupler, you would need to modify the vehicle's wiring, which could cause damage. ☆-------------------------☆ Although it seems to be included in installation kits, it's a must-have for those who are relocating speakers or have received them as a gift and haven't purchased them new. ☆-------------------------☆ I intended to use it for the rear speakers, but it seems the wiring has been cut, so I'm reluctantly putting it up for sale. I'm offering it to someone who is about to install speakers.