This motor stick is compaitble with all of our prop drive type motor mounts. Offsets stick above mount (or to side in case of SS Twin Motor Mounting System). Use to get a little more clearance over the boom for a larger prop if using our pusher mount or Offset Boom Mounts. Anytime you want to lift the motor a little, this is the part. Note, some motor mount sticks have slide holes, this part is just drilled holes and stick is single sided. SKU Number: RRCSSOMM14