Cobalt Steel Reamers | McMaster-Carr

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315 Products

Choose these cobalt steel reamers for good performance on hard-to-machine materials.

These reamers have a looser fit than reamers with standard diameters.

Choose these reamers to create a tighter fit than standard reamer diameters.

Offering good performance on hard-to-machine materials, these cobalt steel reamers come in metric sizes.

Available in wire gauge sizes, these reamers perform well on hard-to-machine materials.

These letter size cobalt steel reamers offer good performance on hard-to-machine materials.

Better abrasion and heat resistance than high-speed steel for up to 25% faster cutting.

More heat and abrasion resistant than high-speed steel, cobalt steel can run up to 25% faster and have a longer tool life.

With better heat and abrasion resistance than high-speed steel, cobalt steel can run up to 25% faster and has a longer tool life.