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Silver cylindrical cobalt annular cutter with pilot pin

Unibor

Unibor 25218 9/16in X 2in M42 Cobalt Annular Cutter with Pilot Pin

SKU CH-FJPH-XWAVN

Cuts mild and stainless steels with a cobalt alloy lasting 30% longer than HSS to a 2in depth

  • Cobalt alloy lasts 30% longer than HSS
  • Cuts mild steel, stainless and softer metals
  • 2in depth of cut for thicker workpieces
  • Includes pilot pin for accurate hole starts
  • Premium M42 cobalt construction for durability

Unibor 25218 Cobalt Annular Cutter

This Unibor 25218 annular cutter uses M42 cobalt alloy to deliver a 30% longer life than HSS alternatives. It cuts softer metals as well as mild and stainless steels with a 2in depth of cut. A pilot pin is included to help start holes accurately.

Machinists needing deep holes in tough steel

Fabricators and maintenance teams who regularly drill 9/16in diameter holes up to 2in deep in stainless or mild steel will benefit from the extended cobalt life. Shops that only work in thin sheet metal or non-ferrous alloys may not need the extra depth or wear resistance this cutter provides.

2in depth of cut capacity

The 2in cutting depth is the single specification that determines whether this tool reaches through your workpiece. Verify the material thickness before ordering, as a shorter cutter will not complete the hole and a longer one adds unnecessary cost.

How it compares

Measured against everything we stock in Bits, Hole Saws & Accessory Kits, at today’s prices. Recalculated every night.

Price $48.99
Pricier than about 66% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameUNIBOR

Questions about this item

How do I pick the right annular cutter size from the available options?

Choose a cutter that matches the hole diameter and material thickness you need; this model cuts a 9/16 in hole up to 2 in deep in mild or stainless steel.

What does the 30% longer life claim mean when the cutter is on a magnetic drill?

The M42 cobalt alloy stays sharp longer than standard HSS, so you complete more holes per cutter before replacement, reducing downtime on the job.

What shank interface does this cutter use and what depth does it support?

It fits standard 3/4 in Weldon shank drives on magnetic drills and delivers a full 2 in depth of cut in a single pass.

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