Pump or Ratchet Screwdriver

Remember these? They were an essential tool in every Carpenters or Joiners toolkit. This is mine, nearly 50 years old now, but still so useful. Wanted to screw some brackets but, of course the battery of the Drill was flat! wanted to get the job finished so out came the Handrill, and my trusty "Yankee". Had to find some screws with slots not Posidrive, but got the job done, The battery is still chargeing!
Would be nice to get a couple of bits to fit , with Posidrive 1 and 2. Anyone know if they are still available?