As an importer of motorcycle spare parts we are looking for high quality brake discs, can you provide as per below mentioned specifications:outside diameter: 320 mminside diameter: 61 mmthickness: 5 mmnumber of holes: 5Diameter holes: 10,5 mmHart to hart size: 81 mmTotal height: 13,5Can you offer these in stainless steel 304 and 316?Country:Netherlands