Internal Tool Single A Nc-453-500 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-453-500 N/C Counterbore
✔️ Single counterbore, 453-500, Fast Clean Holes, Mag Drill Ready

This Internal Tool A Nc-453-500 N/C Counterbore is 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. This is a single piece listing.

✅ Brand: Internal Tool
✅ Mfr part number: 85-4531
✅ Product type: Counterbore
✅ Pack size: Single, 1 piece
✅ Thread size: 453-500

💡 What is an annular cutter and why use it instead of a twist drill?

Annular cutters only cut the rim of the hole, so they work faster with less power.

• They leave a solid slug instead of turning it all to chips.
• Cuts are cleaner and more accurate than twist drills in steel.
• They run great on magnetic drills for big holes.

Pick up the Internal Tool A Nc-453-500 N/C Counterbore and keep your jobs moving.