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2-1/4" diameter, Speedbor max self feed wood drill bit, 3 times the cutting area & edges of standard self feed bits, 7/16" Hex quick change impact shank fits 1/2" or larger drills, also fits 7/16" Hex impact wrench drills, for drilling large diameter holes in wood, aggressive screw Pitch, precision milled shank eliminates run out & wobble, forged in 1 piece from high carbon steel for max strength under tough drilling conditions, ideal for pipe & conduit systems, Carded.
From the Manufacturer
Irwin Industrial Tools 3046012 2-1/4-Inch 3-Cutter Self Feed Bit. For fast, rough or clean and exact holes, Irwin's extensive line of woodboring drill bits provide the user with the best available tools for each application in achieving their wood drilling needs.
Dennis
Reviewed in the United States on January 5, 2025
Self-feeder is very aggressive. As soon as the bit touched the wood it slammed the cutter into the wood stalled my drill press and nearly snatched the piece out of the clamps. I predrilled the center to defeat the self-feed and it worked great. Stayed sharp through a bunch of holes cut in 3/4" plywood.
Engineering Geek
Reviewed in the United States on February 13, 2020
On arrival, the bit was very rough in machining. There were burrs on all sharpened edges. I had to spend about 30 minutes smoothing them out. A really sloppy machining job. I’m disappointed in Irwin.
Jessica Parker
Reviewed in the United States on December 5, 2020
great quality better than I expected
Armando GR
Reviewed in Mexico on August 23, 2019
trabajan excelente. no dejan los cortes muy finos, pero si lo que necesitas es perforar, son perfectas.Aclaro, no son para taladros portátiles, a menos que tengas un dewalt dcd996 o algo así enorme, no la compres.son para taladro de bando, los pequeño se atascan y calientan enseguida. Inclusive si usas el dcd996, que sea con bateria de 5 ampers, por que de 3amp para abajo se queman las baterías.En sí, una excelente pieza.
Shawn
Reviewed in the United States on August 10, 2018
Well, with the speed screws in the center its ridiculously aggressive. If you're plowing through lumber I'm sure speed would be desirable, but for drilling a nice smooth hole into a hardwood project, not so good. Yes, you can remove the speed screw, but it leaves 1/4" dowel in the center that bottoms out before drilling through 3/4"...
Alfredo Perez
Reviewed in the United States on July 17, 2017
This bit is great, eats right through wood.
David Madsen
Reviewed in the United States on July 26, 2016
This drill worked great, I had to buy a new and bigger drill to use it. This bit requires a lot of torque, not speed. We used it to drill a 24 inch hole in a carved tree stump. After burning up 2 household drills, we bought a drill that provided high torque and a moderate speed. With that configuration it only took about 10 minutes to get the job done.
NCHiker
Reviewed in the United States on February 8, 2016
I purchased this bit to make candle holders for a wedding decoration. The type of wood made a big difference in how easily the bit cut through the wood. Overall, the bit worked great and the candles received a lot of compliments!I used these candle holders: And the Candles (I averaged a 7-8 hour burn time):All three products worked great!
Andrew-Joe
Reviewed in the United States on July 20, 2015
Used this with an old drill press to drill 2 1/4" wide holes for candle votives for our wedding center pieces. The self tapping screw is extremely aggressive at first so be ready. It grips the wood and pulls itself in (or your log upward) with a force that is hard to control. Once the cutting blades make contact, this thing cuts like butter. You will definitely need an air hose or shop vac to clear your sawdust and wood scrapings, especially if drilling vertically. After 40 holes at a depth of 2 1/2", the bit was still as sharp as it came in the box.
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