Oxford M10 Mirror Blanking Plugs 2 RH + 1 LH The Oxford M10 Mirror Blanking Plugs 2 RH + 1 LH cover the hole that's left when you switch from a handlebar mounted mirror to a bar end mirror. Mirror Plugs Features: CNC aluminium with knurled edge. 2 clockwise and 1 anti-clockwise plugs included. M8 (OX755) or M10 (OX756) bolt sizes available. Thread pitch: 1.25mm. Simply remove mirrors and screw in plugs. Stops water entering the thread hole and causing corrosion.