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Precision Boring Bars and Tooling

EternAloy boring bars are engineered for ultra-stable internal turning and fine boring in hardened steels, superalloys, and abrasive cast materials. Our carbide and cBN-tipped solutions reduce chatter, hold tight tolerances, and extend tool life in demanding finishes.

  • High stiffness bodies for deep bore stability
  • Carbide, cBN, diamond and ceramic cutting options
  • Optimized edge prep for wear resistance and surface finish
Image Name SKU Price Stock Details Add to Cart
HNT Carbide 5/16" x 2.5" Boring Bar, nACRo HNT Carbide 5/16" x 2.5" Boring Bar, nACRo ETAB5162501 $56.29 InStock View
HNT Carbide 5/16" x 2.5" Boring Bar, uncoated HNT Carbide 5/16" x 2.5" Boring Bar, uncoated ETAB5162502 $47.66 InStock View
HNT CarbideMax 5/16" x 2.5" Boring Bar, nACRo HNT CarbideMax 5/16" x 2.5" Boring Bar, nACRo ETABT5162501 $203.58 InStock View