Having problems mounting your favorite smartphone holder to the circular air vents in your Sprinter van? You're not alone. The NEXUS Cubby Adapter fits snugly into the passenger side dashboard cubby and allows attachment of an air-vent smartphone cradle (not included) to the center slat. Your smartphone will not block your windshield or air-vents for improved safety and comfort. Installs in seconds with no modifications to your van. Simply place the adapter in the cubby and tighten the screw with provided wrench. Made with polycarbonate, one of the strongest and most durable plastics, and will not deform in high temperatures. Recommended for use with rear locking style air-vent compatible phone holders (such as gravity cell phone holders) for secure mounting on even the roughest 4x4 roads. Compatible with the NEXUS Dash Track sold separately. Adapter fits the latest VS30 Sprinter Vans (2019 or later) or Sprinter conversions such as Winnebago Revel, Storyteller Overland or Jayco Terrain with cubby opening measuring 9.5 x 2.7 cm. (Note that some Sprinter versions without an MBUX dashboard touchscreen have a cubby opening that is larger and require the NEXUS Cubby Adapter Retrofit Kit (sold separately on Amazon).