I think the only advantage to the MP kit was a few more keys and additional springs, which they didn't give you a rate for. You don't even really need the keys, drill bits will work in a pinch:

14° = .130” or 3.3mm or #30 drill

16° = .149” or #25 drill

18° = .167” or #19 drill

20° = .184” or #13 drill

22° = .202” or #7 drill

24° = .225” or 5.7mm or #1 drill

26° = .240” or 6.1mm or B drill

28° = .260” or 6.6 mm or G drill