Square Hole Mortise Chisel Drill Bit Tools, HSS Woodworking Hole Saw Mortising Chisel Drill Bit Set Twist Drill, Different Sizes 1/4" 5/16" 3/8" 1/2" 9/16" 5/8"(6pcs)

Just what I needed and wanted

I didn’t buy to use with a mortiser. I intended to use to make square holes for my railing balusters. Work well and have stayed sharp. Getting the job done. Now I am looking at getting a mortiser to do more wood work.

You need to get an adapter for the drill, otherwise these bits will stay loose and not work making the square hole

Saw these advertised on Instagram and great value in Amazon. Great value and great addition the work bench

Bits are all labeled in mm, so takes a little figuring to convert to standard. I had to hone them a bit because they had some burrs on the cutting edge. they aren't particularly hard but seem to hold up ok.

Very Satisfied with Quality and price

These drillbits are definitely not sharp. I put them in my drill and I could barely press down and make a hole. I don’t know why they’re not sharpened but really it was just a waste of money.

did not like the fact that all bits had only metric labels