Fitting Reducer Metric M12 M12X1.75 Male to M8 M8X1.25 Female Thread Adapter @LG | eBay
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 2)
Fitting Metric M8 X 1.25 M8X1.25 Male to M10 X 1.5 M10X1.5 Female Gauge