Woodworking Square Hole Mortise Drill Bit Sets, 5pcs HSS Woodworker Mortising Chisel Bits Mortise Machines Press Attachments Power Tool Square Drill Bits Countersink Bits for MDF, 1/2, 5/8IN

Material: Woodworking square hole drill bits are made of high-speed steel, Heat treatment process, Sharp and wear-resistant bladed and not easy to break, square drill bit with high hardness ,long using life High efficiency: The U-shaped long chip flute design facilitates removal of sawdust and improves drilling efficiency, Combination of long drill core and square chisel easy to drill square hole, saving labor and effort , improve work efficiency. Multi Size available: Come with total 5pcs different size square drill bits, 1/4"(6.4mm), 5/16"(8mm), 7/16"(9.5mm), 1/2"(12.7mm), 5/8"(mm). Can meet most your needs. Widely using occasion: These woodworking square hole drill bits are suitable for mortise and square hole machines(ATTENTION: the square hole drill bits are only fit for machine and bench drill, but not hand drill. Please make sure the drill and the wood board are at a 90-degree angle.), and for construction, installation, renovation, decoration industry. Also, these drill bits fit for working on solid wood, particleboard, MDF, etc. Warranty: Our store provide quality service to customers , if you have any quality problems,you can contact us at any time, we will try our best to solve your problems.