Within the car phone mounts and holders selection, CD Slot Mount for Carplay Screen 17mm Ball for Garmin Nuvi GPS Cell Phone in-Car is listed as an option for positioning a phone for navigation and hands-free viewing. Its listing calls out 17mm. Compatibility information shown in the title includes Carplay Screen 17mm Ball for Garmin Nuvi GPS Cell Phone in-Car; check it against your vehicle or equipment before selecting a variant. Use the listed slot mount carplay screen 17mm details to distinguish this version from similar car phone mounts and holders. Make sure the pictured design, fitment information and chosen configuration match your requirements before checkout.