This is the iDatalink Maestro APX-S8-FO1 APX Floating Radio Install Kit.

This kit is designed for use with Kenwood & JVC's new line of direct fit replacement multimedia receivers. 

These kits are also designed to be paired with the following parts:

iDatalink Maestro ADS-MRR or ADS-MRR2
iDatalink Maestro ACC-HU-KEN1