Internal Tool Single A Nc-406-437 N/C Counterbore, Handy Pick for Fabricators and Steel Crews, Sharp Cutter Built for Long Tool Life, Pro Grade Annular Cutter for Fast, Clean Big Holes

Internal Tool Single A Nc-406-437 N/C Counterbore
✔️ Single counterbore, 406-437, Long Tool Life, Fast Clean Holes

Meet the Internal Tool A Nc-406-437 N/C Counterbore, an annular cutter for fast, clean, large holes in steel with a magnetic drill. Fabricators, steel erectors, welders and maintenance crews use it on mag drills for big holes in plate, beams and tube. You get one single unit with this order.

✅ Brand: Internal Tool
✅ Mfr part number: 85-4061
✅ Product type: Counterbore
✅ Pack size: Single, 1 piece
✅ Thread size: 406-437

💡 What is a Weldon shank?

Weldon shanks have flats that lock the cutter in the arbor.

• The flats stop the cutter from slipping under load.
• Universal shanks fit many magnetic drill brands.
• Match the shank to your drill before ordering.

Add the Internal Tool A Nc-406-437 N/C Counterbore to your kit and work smarter.