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Shank Diameter : 1/2"
Minimum Boring Range: 5/16" - 9/16" (follow); Overall Length:2-1/4" to 4-1/2" (follow); Boring Depth Range: 3/4" - 3" (follow)
Contains (3) pcs. 5/16" minimum bore (1 ea. 3/4" bore depth x 2-1/4" overall, 1 ea. 1-1/8" x 2-5/8", & 1 ea. 1-1/2" x 3")
Contains (3) pcs. 7/16" minimum bore (1 ea. 1-1/8" bore depth x 2-5/8" overall, 1 ea. 1-11/16" x 3-3/16", & 1 ea. 2-1/4" x 3-3/4")
Contains (3) pcs. 9/16" minimum bore (1 ea. 1-1/2" bore depth x 3" overall, 1 ea. 2-1/4" x 3-3/4", & 1 ea. 3" x 4-1/2")
C-6 Carbide for use in harder materials but also works great in aluminum and other soft metals
All shanks are held to 0.0000-0.0005" from the nominal diameter and made of special heat treated alloy steel
Ben
2025-09-03 16:16:27
These are what the are and work as they should.
Tim James
2025-08-20 14:45:04
Harbor freight boring bar set is better, but they don’t sell them in store anymore. None of these have a cut relief angle ground in. A few min on a grinder (per tool) is enough to get them nice and functional, but having to grind carbide it is an annoyance and hard on wheels. Otherwise appear to be decent quality. Will update if I encounter any issues in use.
Airjohn
2025-05-31 21:09:11
Worked good for the price.
Mike Broom
2025-04-18 13:14:19
Relief angles were all wrong, ultra brittle, absolute garbage. Finally chattered out a big enough hole to use an insert bar and had no problems. You're better off using a stick.
Homeswithceline
2025-02-22 12:58:45
Pros: Clean, nice range of sizes, cheapCons: not rigid enough, deflects immediately.
J. Tryner
2024-12-20 11:18:44
At first I couldn't figure out why these were giving me a horrible surface finish and so much chatter. Then I looked closely and realized the bottom of the tool was dragging in the hole I was boring. Once I dressed the clearance angle a little until it was only touching on the face of the tool it was cutting really nicely. So far have only used on AL. I still think these are 4 stars simply because they are so cheap.
Chetjang
2024-12-16 18:53:10
Like I said appear well made although I was expecting flat bars to fit in my lathe turret. They are rounded so only fit in my tail chuck unless I grind to sides flat which would make them more useful for me. Annoying that no size labels so have to measure each one.
william arthur wise jr
2024-11-29 14:28:18
Used for boring wood in metal lathe.. not sharpe enough for that
Hemi Power
2024-11-26 16:56:29
I didn't dislike anything about this product. I have bought other sets before coming from a different different country. The quality was poor but this product quality is very good, no chipped carbide and overall finishes are good, they don't look like they've been made in a back room somewhere. Price is good, would buy again if needed.
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