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Specification:
Contains 1 each R8 holders: 1/4", 3/8", 1/2", 5/8", 3/4" Drawbar End Thread: 7/16"-20 For double and single end (single end mill only for sizes over 5/8") Hardened and ground for durabilty and superior performance Crafted from alloy forged tool steel
Hardened and ground throughout to assure maximum concentricity
Hardened and ground for durabilty and superior performance crafted from alloy forged tool steel
Connor H.
Reviewed in the United States on April 11, 2023
They say they are r-8 but they left a bunch of play in my mill. The 3/8” bit hold was loose and in my grizzly mill. I have the grizzly 0781 and this set does not math the drawbar depth. The threads matched but there was about 3/4” extra when the threads bottomed out.This would probably work in some application in a different mill but for somewhat-precision milling I wish I went with a more reputable brand.
Darrin Boggs
Reviewed in the United States on August 15, 2022
I would not suggest buying these. The bore in the holders are very rough and not at all accurate. I put a solid carbide end mill in the 3/4 holder and it was very loose fitting. I checked the runout and the cutter was .015 out to the spindle. The set screws that hold the cutter in, not even close to being centered.
Richard Greene
Reviewed in the United States on December 14, 2022
The 1/2 holder was not drilled deep enough to hold the end mill on the flat.
Don Pittman
Reviewed in the United States on March 26, 2021
I've used the 1/2 and the 1/4 and the bore on the 1/2 is not drilled straight the end mill wobbles a bit.
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