Super Tool Single Counterbore, 5/16" D, Carbide Tipped, Pro Grade Annular Cutter for Fast, Clean Big Holes, Tough Core Cutter for Mag Drills and Steel Work

Super Tool Single Counterbore, 5/16", Carbide
✔️ Single counterbore, 5/16", Carbide, Fast Clean Holes

This Super Tool 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: Super Tool
✅ Mfr part number: 56402
✅ Product type: Counterbore
✅ Pack size: Single, 1 piece
✅ Size or length: 5/16"
✅ Material: Carbide

💡 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 Super Tool Counterbore and keep your jobs moving.