Mirror Adapter M10 x 1.25 Left Hand Thread to M8 x 1.25 - HIGHSIDER
High quality brass thread adapter M8 to M4 / M6 / M8 / M10 / M12, set of 4 | eBay
Amazon.com: 1PZ MXM-001 Mirror Mount Adapter - M8 female to M10 male or 8mm to 10mm Chrome Replacement for Honda Custom Cafe Chopper Bobber Tracker Vintage Classic Kawasaki Yamaha Suzuki (Pack of