Drill Perfect Square Holes Every Time!

“ This kit does come with 4 bits which helps get you started much sooner. This bracket is also easier to mount then others I have used. Overall it's a good kit with great value” - Adam S.

Why Get Our Square Hole Drill Bit Adapter?

✅Turns Drill Press Into Mortising Machine: Chiseling mortises by hand is tedious and inconsistent. This adapter easily upgrades your drill press to cut square holes with precision.

✅Durable All-Steel Construction: Weak adapters wear out and break under pressure. Made of cast steel, this adapter stands up to repeated use and ensures long-lasting performance.

✅Sharp Carbide-Tipped Bits: Blunt bits slow you down and damage wood. The included carbide bits cut cleanly with high hardness and extended service life.

✅Efficient Wood Chip Removal: Clogging disrupts drilling and overheats bits. The U-shaped sleeve quickly clears chips, keeping cuts smooth and the tool cool.

🌟HOW TO USE

• The drill core is very sharp. Please wear working gloves to avoid direct contact between your hands and the drill bit during installation.

• Put the square drill shell and drill core into the jig of the square tenoning machine, and then hold the square hole drill bit by hand

• Take 0.5~1mm thick sheet (metal sheet or plastic sheet) and jam it at the step of the drill shell. After fixing the drill core, remove the sheet, then adjust the angle of the drill shell to the top to ensure clamping, so that a 0.5~1mm gap can be formed between the drill core head and the inner bevel of the drill shell, which can prevent the bit from jamming during use .
  

📓FREQUENTLY ASKED QUESTIONS

Q: What drill machines is this adapter compatible with?

A: It fits benchtop drill machines with hand drill clip diameters of 38–55mm (1.5–2.2 inches).

Q: Can I use this with a cordless drill?

A: No. It is not suitable for lithium battery drills or bench drills without round bore bearings.

Q: What sizes of square holes can I cut?

A: It comes with four bits: 1/4", 5/16", 3/8", and 1/2".

⚙️ Specifications:

• Color: Silver and Black

• Item Weight: 2.76 lbs.

• Material: High Speed Steel (HSS)

• Cutting Diameter: 12.7 Millimeters

• Shank Type: Square

• Hardness: Up to HRC48~50

• Square hole size: 1/4" (6.4mm), 5/16" (8mm), 3/8" (9.5mm), 1/2"(12.7mm)

• Compatibility: Fit for benchtop drill machine with hand drill clip diameters between 38 and 55mm (1.5 and 2.2 inches).

• Product dimensions: ‎ 8.54 x 4.92 x 4.45 inches

📦Package Inclusions: 

• 1 x Square Hole Drill Bit Adapter

• 4 x Woodworking chisel drill bits