• Making your woodworking easier and faster with our Professional wood drill bit, it's suitable for construction, installation, renovation, decoration industry, etc. With long drill core and square chisel, easy to lock the hole on the wood, then you can get different mortises quickly. 
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Main Features

• High Working Efficiency
  High-performance flute design geometry for superior chip extraction. It will get double effect by matched use with mortise and tenon machine, the square hole punching needs to use an electric drill, hammer and other tools.
• Wide Application
  These woodworking mortising chisel bits are suitable for bench drilling machine, mortising machine or a mortising attachment. Apply for a woodworking project, construction, installation, decoration industry and more.
• Labor-saving
  Reduce the labor intensity of construction workers, speed up the construction speed, reduce construction costs for construction, installation, renovation, decoration industries.
• 5 Sizes Meet Your Most Needs
  Come with 5 different size for your choose, 1/4"(6.4mm), 5/16"(8mm), 3/8"(9.5mm), 1/2"(12.7mm), 5/8"(16mm). These long square drill bits set can meet most of your needs, and each drill packed in a single plastic case, easy to maintain.
• High Hardness And Concentricity
  These square hole drill bits made of high-speed steel, through heat processing, with high hardness drill bits, and sharp-edged square chisel, long life.

         Slotting Flute Diameter and Total of Weight

Specifications

Note

• Due to manual measurements, please allow slight measurement deviations.
• The drill bits need to cooperate with the use of special equipment, an electric hand drill is not applicable.