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7Pcs Woodworking Square Hole Drill Bits
Shaft length ( Drilling depth ):
-1/4"(6.4mm): 45mm
-5/16"(8mm): 60mm
-3/8" (9.5mm): 60mm
-1/2"(12.7mm): 60mm
-9/16" (14mm): 75mm
-5/8"(16mm) : 75mm
-3/4" (19mm): 75mm
Clamping shank diameter: 19mm (Round)
Specification:
Material: High Speed Steel(HSS)
Hardness: Up to HRC48~50
Shape of hole: square, rectangle
Note:
* Square hole drill can not be used on an electric drill, drill square holes need to fit a square hole drill drilling (mortise and tenon machine) to use.
* To avoid drill bits become overheated and get burned up due to fast rotary friction, we suggest use cutting fluid to keep the bits cold during usage.
Package included:
1 x 1/4" (6.4mm)
1 x 5/16" (8mm)
1 x 3/8" (9.5mm)
1 x 1/2" (12.7mm)
1 x 9/16" (14mm)
1 x 5/8" (16mm)
1 x 3/4" (19mm)
travisophila
Reviewed in the United States on March 20, 2025
Very cheap. Good to have a set of mortising chisels for the price, but after I used the 1/2" chisel a few times it was bent and not usable. Sharpening did not fix it, sadly it is just made with cheap steel.
andrew thiessen
Reviewed in the United States on February 11, 2025
I'd guess these are fine for some machines. But they're are NOT long enough to work in a Powermatic 'Model 10' stomp mortiser. Maybe not applicable information for too many folks, but thought I'd warn you just in case you're like me and trying to save $220. We really do need to buy PM's 4pc $250 set. Dang.
Edward of Washington
Reviewed in the United States on February 27, 2024
I bought a set because I wanted to use them to hollow out a 2" x 2" x 4" piece of hardwood to make a business card holder. I found that they didn't cut as square on the sidewalls as I thought they would; however, I only bought a mortising kit to attach to my drill press and that kit was a problem in itself for mounting and accuracy.The other problem with mortise bits, is that they leave a small drill hole in the bottom of the wood. It wouldn't be a problem if I was using it simply as a tool to mortise a piece for a joint; however, I'm using it as an exposed/finished piece of wood. The way I solved that problem was to order a set of steel, end mills and used them on my drill press, creating a simple milling machine with the use of a two-axis vice mounted to the bed of the drill press. It easily squares the sides of the wood and also removes the the drill holes left in the bottom of the wood.
Fortney
Reviewed in the United States on January 7, 2024
Works better than expected in my drill press, not mortise machine. Uses soft touch.
Thomas Hines
Reviewed in the United States on March 6, 2023
Really sharp
Dave Addleton
Reviewed in the United States on August 9, 2022
Haven't used them yet, but they appear to be the same quality as the bit that came with it.
Mowerman
Reviewed in the United States on June 25, 2022
I am apparently going to have to buy a set that costs 3 times as much money to get the quality that I want.
David E
Reviewed in Canada on May 19, 2022
I bought the set to give me some variety of mortice sizes. The outside square grind is rough to say it kindly but the internal grind on the square chisel points are virtually unusable out of the box. Very disappointing.
James N
Reviewed in the United States on March 10, 2022
mortise bit are dull and need to be sharpened. Quality is OK for price
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