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- 21 PC Set HSS Straight Shank Interchangeable Pilot Counterbore
- Straight Shank
- Supplied In Case ( CASE MAY VARY)
- 14 Piolts With A 5/32'' Shank:
0.187'', 0.204'', 0.213'', 0.229'', 1/4'', 17/64'', 9/32'', 5/16'', 21/64'', 11/32'', 3/8'', 25/64'', 13/32'', And 7/16'' - 6 Counterbores:
5/16'', 3/8'', 7/16'', 1/2'', 9/16'', And 5/8'' - 1 Holder 3/8" Shank
- Case Dim L x W x H (in):
9 x 7 x 2-1/4 *Estimated* - Shipping Weight:
2 Lbs - Quantity:
1 Set
FSLI
Reviewed in the United States on October 28, 2023
I was looking at counterbore sets, and came across this product which has a lower price than a remarkably similar looking set. I took a gamble, since there were no reviews of this product, and it paid off.I measured the pilots and all were true to their marked dimensions. The fit of the bore bits is snug in the bit holder, and likewise the pilots are snug in the bits. I used the 5/16" bit with the .2130 pilot in an aluminum block, and the hole was clean, without burrs, and the measurement was also less than .001" off. From my measurements, the tools are very precise.If I were to knock 1/2 a star, it would be because a) there are no instructions provided, though you could argue that it's simple enough to understand how everything fits together, and b) I don't understand the point of the sight hole in the bit holder. The pilot shanks do not extend far enough into the bit holder to be visible at all. I would expect the purpose of the sight hole is to confirm the bit and pilot are seated fully into the holder. However, I could hear a positive seating of the bit when inserted into the holder, and the pilot also sits flush to the bit. Just curious about the sight hole.Overall, I'm very pleased with this counterbore set.
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