Drill-Taps ! Start Using This TODAY! - Electrical Bonding The Right Way!
https://www.lowes.com/pd/Greenlee-6-32-to-1-4-20-Drill-Tap-Set-6-Piece/1003128500#preview-specifications
https://www.amazon.com/Greenlee-DTAPKITM-M3-M10-6-Piece-Combination/dp/B0041FIR0K/ref=sr_1_3?crid=1J01EX1ZE9RFY&keywords=greenlee+taps&qid=1652222313&sprefix=greenlee+taps%2Caps%2C92&sr=8-3
https://www.toolup.com/Greenlee-DTAPKIT-6-32-to-1-4-20-6-Piece-Drill-Tap-Set?msclkid=791bca07152016a4d8eba87df6d62d71
Complete hole drilling, tapping,deburring and countersinking in one operation with power drill saves labor and time.
Back tapered beyond tap to prevent thread damage from over-drilling
Deburr/countersink also provided on bit beyond back taper
Split-point tip penetrates faster and prevents walking while drilling
High speed steel
Use cutting oil when drilling/tapping stainless steel for extended tool life
Use with 18V battery drill or similar size for optimum use
Use low setting on battery drill for best cutting
Designed to drill/tap in stainless or 1/4 in thick materials
6-32, 8-32, 10-24, 10-32, 12-24, 1/4-20
Installation Manual
PDF