Key benefits Enables precise squarehole drilling in woodworking using a mortising machine or a mortising attachment (squarehole drilling). Made of speed steel with hardness 56 HRC, featuring a lengthened core, sharp cutting edge, continuous blade for quick, efficient cuts, durability and long life after heat treatment. performance flute geometry provides chip extraction, reducing labor intensity, speeding up work, and helping lower construction costs. Compatibility and usage notes This square hole drill is not compatible with general purpose electric drills. It must be used with a squarehole drilling setup such as a mortising machine or a mortising attachment. If this requirement is not acceptable, please do not . If needed, you can use an external square graver to break out waste with hammer blows manually. Material and durability Material: speed steel Hardness: 56 HRC Features a lengthened core, sharp cutting edge, continuous blade Heat treated for durability and long service life Design and performance performance flute design geometry for chip extraction Designed to reduce labor intensity and accelerate construction work Helps lower construction, installation, renovation, and decoration costs Applications Ideal for opening square holes in woodworking with a mortising machine or a mortising attachment Primarily used in construction, installation, renovation, and decoration industries Use scenarios Scenario 1: Furniture fabrication requiring precise square mortises for joinery using a mortising machine Scenario 2: Cabinet and builtin installation where squarehole passthroughs are needed for hardware or structural components Scenario 3: Renovation projects involving upgrading or replacing squaretenon joints and brackets that must fit into square mortises