Cast Aluminum Square Hole Drill Bit Adapter ($11.99)

No need to hack the Matrix – price is just $11.99 on Banggood. Updated: 07-01-2026.

Cast Aluminum Square Hole Drill Bit Adapter for Hand Electric Drills Easy Installation Durable Woodworking Tool with Precise 20mm Width 38-43mm Diameter Fitment Quick and Smooth Drilling
Banggood warehouse: China.

Price: $11.99

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Aliexpress

There’re some similar (or not) items on Aliexpress

Image	Product (link)	Price
	Square Hole Drill Fixed Bracket Aluminum Cast Iron Mortising Attachment	$7.28
	Square Hole Drill Fixed Bracket Cast Aluminum Professional Precise Woodworking Tool Durable Drill Bit for Hand Electric Drill	$14.37
	Square Hole Drill Bit Adapter Attachment Cast Aluminum Quickly Install or Disassemble Mortise Tool for Hand Electric Drill	$15.76
	Durable manual electric drill bit, professional precision woodworking tool, square hole drilling fixed bracket cast aluminum	$38.68

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