The following driver bits are compatible with McFeely's Product
#RMZ-1424 : N/A 1/4-20 x 21/2 Round Head Machine Screw.

FIND-A-BIT RESULTS
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Wondering what's up with the color bits?  Well, here’s the concept exclusively from McFeely's...

#0 Bit   Used with #4 screws
#1 Bit  

Used with #6 screws

#2 Bit   Used with # 8 and # 10 screws
#3 Bit   Used with  #12 and #14 screws