• Back tapered beyond tap to prevent thread damage from over-drilling; Deburr/countersink also provided on bit beyond back taper
  • Quick change adaptor included in both metric and standard kits; All operation in one time with power drill saves labor and time
  • Made from hardened high-speed steel vs. carbon steel for longer life; Designed to tap up to 10-gauge metal; Point is self-centering and eliminates the need for center drilling or center punching
  • 6 sizes in one drill and tap bit set (M3, M4, M5, M6, M8, M10) to meet your diversified requirements
  • Drill and tap bits have high quality hex shank to confirm strong connection to drill chuck. Ideal for hole drilling, tapping and deburring/countersinking applications in wood, plank, mild steel, copper, brass and aluminum metals

I've never used combination drill/tap bits before this.....but now I wonder how I've managed to live without them. I needed to drill and tap some holes into a piece of acrylic sheet for some PC board standoffs. I was having terrible luck using my drill and a separate tap set. I picked these up on a whim, even though some reviewers stated issues with them breaking when using them on steel. Obviously I shouldn't have any issue with a steel bit breaking off while drilling plastic, so I gave them a chance. Results? Quickly drilled holes, tapped perfectly. My standoffs and boards were mounted in record time. I highly recommend this product.....at least for anyone planning to use them with softer materials.

Convenient bits to drill and thread holes, came in handy as I built a LED grow light where my LED cobs are attached via holders and screws. Only thing is to go slow when drilling and once the hole is made going back and forth with the drill to get the thread. Went to fast at first and bit broke off

Work great.. Just take it easy with them.

Finally a simple way to make a ton of holes!

Fast shipment, cheap and good quality product. Thank you!

I heard issues of easy breaking but in Aluminum, it work simply and easily...great concept...poke a hole where you want and it has threads....LOVE IT!

exactly as advertised, quality, does the job