Paquet de 4 forets à trous carrés, foret à mortaiser carré, foret carré, foret pour trous carrés, foret carré à bois, scie cloche à bois avec foret hélicoïdal (1/4", 5/16", 3/8", 1/2")

[4 Different Sizes] 1/4" (6.35 mm), 5/16" (7.94 mm), 3/8" (9.5 mm), 1/2" (12.7 mm) square hole drill bits. 4 square wood drill bits per pack with different slot diameters to meet your needs.

[Excellent Quality] This square hole drill bit is made of high-speed steel, heat-treated, HRC48-50, offering high hardness, an extended core, and high concentricity.

[Application] Suitable for all mortisers and drill attachments. This square hole drill bit is suitable for wood, including MDF, particleboard, channel wood, pine, basswood, etc.

Metal, glass, plastic, concrete, plasterboard, etc.

[Standard Chip Design] Standard chip design, easy to remove wood chips, improves drilling efficiency. Reduces the workload of construction workers, speeds up construction, and lowers construction costs.

Installation, renovation, and decoration industries.

[Scientific Compatibility] Combined use with mortise and tenon machines achieves a double effect. Electric drills, hammers, and other tools are needed to drill square holes. Caution: The drill bit

alone will not work in a drill press holder; you will need to use a mortise lock.