Macht Schnell Seat Floor Adapters. $150 shipped. The attached picture is 4K. Feel free to save it to desktop to inspect the details. There are a few light scratches from handling and fitting the seat. The condition is great overall for floor mounts that have actually been mounted.
Fitment:
2008-2012 E82 BMW 128i 135i 1M Coupe
2006-2011 E90 BMW 325i 325xi 328i 328xi 328i xDrive 330i 330xi 335d 335i 335xi 335i xDrive M3 - Sedan
2006-2012 E91 BMW 325xi 328i 328xi 328i xDrive - Wagon
2007-2013 E92 BMW 328i 328xi 328i xDrive 335i 335is 335xi 335i xDrive M3 - Coupe