Square Hole Drill Bit Adapter with 4pcs Square Hole Drill Bit, Mortising Attachment for Drill Press, Mortise Machine, Power Tool Accessory for Drill Machines

It's great

In principle, this tool attachment is a great idea. Unfortunately, the quality of the adapter and bits was so poor that it was unusable. The adapter didn't sit flush on the drill press fixed ring so it couldn't be centered properly. The bit housings weren't straight, and the bits contacted the insides of the housings. After spending an hour adjusting every piece, it produced a poor, off-center "almost" square hole.You're better off using a router or hand tools than messing with this attachment.

I like the sharpness of the drill bit

Works ok. I do not like the bolts or having Philips head screws on the bit holder. These will strip out and it is a place that will get constant use even if you leave it as a permanent mount. At the swivel you may want to put loc-tite on the nuts they will vibrate loose. No instructions came with mine I have never used one. Make sure bit is all the way up till it stops or will not cut properly. Overall I seems to be a very good value fore the money.

Not strong enough to function, weak bits, weak construction. Buy a one piece kit, not this metal garbage. Wish I would have returned

it works

Not at all what the review said this product can do had a hard time with this

The bracket on this set is a but lower quality relative to others that are entirely cast iron based. However this kit does come with 4 bits which helps get you started much sooner. This bracket is also easier to mount then others I have used. Overall it's a good kit with great value but it is a less durable product.