Atlas M6-735 Instructions For EXT BRKT For MM Threads.pdf. Instructions for installing and using the extension bracket, which adds a Position "D" to the Banjo on any of the Atlas built 6" lathes. Also shows additional parts required in order to install it. Bracket is required in order to cut metric thread pitches of 0.5 mm. 1.75 mm and 2.0 mm pitch.