4 Piece Square Hole Drill Bit Set, Square Hole Wood Drill Bits, Square Hole Mortising Chisel

General descriptionSet of 4 Square Hole Drill Bit Sets designed for woodworking, ideal for drilling square holes in wood using a mortiser or mortising machine. These drill bits are made from high-speed steel, ensuring durability and practicality for various construction, installation, renovation, and decoration projects.Technical specificationsMaterial: High-speed steelHardness: HRC48-50Sizes: 1/4" (6.35mm), 5/16" (7.94mm), 3/8" (9.5mm), 1/2" (12.7mm)InstallationUsed in conjunction with a mortising machineIf drilling manually, tools such as a hand drill and a hammer are requiredUsageIdeal for drilling square holes in woodStandard chip design for easy removal of wood chips, improving drilling efficiencyReduces labor intensity and accelerates construction speedHelps lower construction costs