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Your cart is empty.Ivy Classic Industries is dedicated to producing a comprehensive, quality line of power tool accessories and hand tools. Ivy Classic Swift bore 4-inch forstner bit extensions extend any forstner shank bit an additional four inches. These extensions are constructed out of high carbon steel and come equipped with two set screws and a hex key.
roadkingmoj
2025-08-27 15:46:42
Needed an extension for a shaft and did not want to machine one. This extension shaft worked perfect with no problems.
Sarmad Badii
2025-08-15 21:04:46
You can use this to extend the length of your forester bits to bore deeper holes. It’s solid and well built. The receptacle hole is a tight fit which keeps the bit properly centered. Good product. I recommend it. Thanks.
J Osborne
2025-07-12 15:43:44
This is for the 5-piece set that goes from 3/4 to 1-3/8. It's a nice convenient small set that fills a gap in the market for those that don't need large or specialty sizes and may already have a few smaller bits in the tool chest, and the wooden box is classy and nice to have (and well made). To be honest I have used and never been terribly impressed with some Ivy Classic tools, but I don't think any of them are crap and some of them are pretty nice - I do think they attempt to fill the middle zone in terms of quality but at an often inflated price, considering. You can do much worse even from some larger mainstream well-known brand names. The bits themselves are not especially well finished, so you should probably expect to do some touch up sharpening prior to use or soon after putting them to use - out of the box mine were just ok, but with a half hour of diamond and ceramic touch up, they're very good and cut nicely. Any straight and not too thick stone will work for the center surfaces - the tip doesn't need to be that sharp. The outer edges are challenging to sharpen well so a small round grinding stone used carefully is the best approach. Luckily the outer edges an all of my bits, while not the sharpest, were decent enough and there weren't any big flat areas that require more grinding to correct, like you typically see now on many cheaper forstner bits. Photo shows first test holes in old pine and red oak after my touch up sharpening. The great part is that these are HSS, so it's worth the effort and the price is really fair on this set - I do wonder if it's just the cheapest M50 industrial steel, however, given the very low Rockwell hardness rating shown in the listing. These are not Freud or Fische quality but they are a far cry better than the junk I've seen lately from Irwin, Dewalt, Bosch, the old Porter Cable ones, and they are way nicer than any number of cheaper import "brands" out there. So while I may pass up and recommend other items than Ivy Classic for many items, I think this series of forstner bits from them is a great buy and a worthy tool to own.
J. Rex
2025-06-18 14:25:54
Needed a smaller extension for a wood project. Works well,good price. No complaints.
Markcm
2025-04-28 13:13:20
We have a local "has everything" family owned hardware store and they did not have an extension for 3/8" round shank. This was the perfect solution. It is built solid, and a good price.Home depot did not have this either. I am very please with this solution for only $11.
Pete
2025-02-28 14:39:30
Had to drill deeper than my forstner bits would allow and this was a great solution.
Leonard Watson
2025-02-08 10:30:06
This is a good little extension but does seem to have a tiny bit of runout.
RWiser577
2025-02-06 18:29:54
I had to bore holes through a thick piece of wood in a drill press. It got the task done with great accuracy. I gave four stars, because the set screws marred my forstner bit.
Peter H
2025-01-15 12:25:57
This item was exactly what I wanted and it works as I expected it to
Jean Francois Jolette
2025-01-02 12:43:10
Good quality. Fits perfectly and holds the forstner bit very well. I was afraid of slipping or warping but no. I drill in 3†1/2 of oak without any problem. Worth the price
ROBERT C DE VRIES
2025-01-01 18:33:36
Only problem some fausner bits don’t fit in the hole diameter
nickypoo
2024-11-25 14:55:01
quality not very good made from casting then machined grub screws to small have now purchased 2 excellent one from the UK for the same price
Kim B.
2024-11-14 21:12:04
on time and correct to order
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