Square Woodworking Mortising Chisel Countersink Review

【Square Mortising】These wood mortising chisel bits are designed in sharp-edge square with high hardness drills inside, they are through heat processing, safety and durable for drilling a Square Mortise on a wood board. 【Available Application】These woodworking mortising chisel bits set are suitable for drilling square holes in wood with a mortising machine or a mortising attachment. Also, it fit for bench drilling machine. These square drill bits are not fit for any hand drill. Please make sure that the wood board and the drill are at a 90 degree angle. 【Quick and Precise】The machine is going to spin this bit, and removes a circular column of material and the chisel comes up behind it to Square everything off. It is much easier and quick to mortise on hard wood, and to chisel a relative clean and precise mortise for tenon joint. 【Material & Size】This square hole drill bit set comes with a two-part device that consists of a hollow square chisel and an auger bit that fits inside. Each four sided chisel is made of high speed steel, in the combination with unique bit with 4 popular size: 1/4 inch, 5/16 inch, 3/8 inch, 1/2 inch. 【Customer Warranty】If you have any problem with the Square Hole Drill Bit you purchased from us, please feel free to contact us and our sales support team is standing by to assist you. We can send you a new one or refund you the full payment according to your needs.