... HD25:Bicycle light Aluminum Mount instructions:* the top side adapt 25mm diameter body light such as P408N, KR08, KR09, M12,M8, ... M9 , BL09 , BL10, BL12. * Loose the top side screw by ... the light through the small hole ( if mount the flashlight , you must turn down the tailcap switch before inset the light body ). * Bicycle bar mount: Loose the ...