ProMasterTool™ Universal Mortising Attachment

Turn Your Drill Into a Professional Square-Hole Cutting Machine

Create perfectly clean square holes without buying expensive dedicated mortising equipment!
This universal attachment instantly transforms your electric drill or drill press into a full mortising system, giving you access to precise mortise-and-tenon joinery anytime you need it.

Compatible with all standard drills and drill presses.

💡 A Must-Have for Woodworkers & Craftsmen

Take your woodworking to the next level! With included chisels in 1/4", 5/16", 3/8", and 1/2", you can easily make accurate square holes for:

✔ furniture building
✔ door lock installation
✔ decorative cutouts
✔ precise mortise-and-tenon joints

🛠 Works with Your Drill Press

Enjoy the precision and control of a professional mortising machine — without the cost.
Perfect mortise joints are now fast, clean, and hassle-free, with no need for chiseling by hand.

🔌 Also Works with a Standard Electric Drill

A great tool for installers, cabinet makers, and on-site jobs:

drilling square holes for door locks
cutting square recesses in wood and other materials
working on locations where a drill press isn’t available

One attachment — endless possibilities.

🔧 PRO TIP from ProMasterTool

To protect your drill press table and the cutting edge of the mortising chisel, place a 1/2" (12 mm) plywood sheet as a protective layer.
This prevents accidental damage and keeps your chisel sharp and accurate.

📌 Specifications

Material: High-Speed Steel (HSS), heat-treated to HRC48–50
Collar Size: 55 mm (2.17")
Length: 100 mm (4")
Compatibility: Fits all electric drills & drill presses
Use: For fast and accurate square hole and mortise cutting

📦 Package Includes

1 × Universal Mortising Attachment
4 × Mortise Chisels: 1/4", 5/16", 3/8", 1/2"
1 × Guide Collar