Mirror adaptors to allow 10 mm threaded fixing mirrors to be fitted to Thunderbird 1600, 1700, LT, Commander, Storm, Bonneville 800/865 up to vin 380777, T100, Rocket 3, Classic, Touring, Roadster, Speedmaster and America. These adaptors fit in place of the original plain stem and are held in place using the same screw. The adaptors are CNC machined from aircraft specification aluminium HE 30 6082 T6 anodized for extra corrosion resistance. They are both right hand thread 10 mm diameter x 1.25 mm pitch. Black anodized finish blends with mirror fixing point. Sold as a pair.