Irwin Tools Irwin Industrial Tools 3046008 1-1/2-Inch 3-Cutter Self Feed Drill Bit

Excellent tool. No problems.

This is one gnarly bit! I needed it to drill holes in white birch for my wedding decorations and this was the ONLY thing that got the job done. Great product!

Makes clean cuts faster than any other big bit I use. Highly recommended.

Good fast cutting although I've found the self feed to be a little fast for me so I grind most of the threads off the pilot allowing me to easier control the feed rate.Spencer Boyd[...]

Great item. Sharp on arrival and seems to be well made. For the price you can't go wrong.

This is what you want for inch and a half hole, just dont hit any metal, with this bit on my hand drill, you're making holes about 5 seconds a peice.

Super fast and cleans really well. Will not withstand the first nail encounter.

The 3x bit is well made and cuts fast, but it gets clogged with shavings causing the operator to have to stop to clear the chips after every half inch or so of drilling. At least this was the case when I used it to drill in white pine.