Pack of 4 - ring bolts similar to DIN 580 - A2 V2A stainless steel : Amazon.de: DIY & Tools
XOMAX XM-2VN768 Car Radio with Mirrorlink, GPS Navigation, Navigation Software, Bluetooth Hands-Free Kit, 7 Inch / 18 cm Touchscreen Screen, FM Tuner, SD, USB, 2 DIN : Amazon.de: Electronics & Photo