FeaturesMade from a cryogenic hardening process rather than heat to create a more durable and longer lasting hole sawOptimized tooth form for cutting twice as fastWide, angled and offset slots for easy plug accessRip Guardâ„¢ the strongest tooth form in the industryRip Guardâ„¢ limited lifetime tooth break warranty plug Jackâ„¢ an all access slot design for fast plug removalBi-metal construction with 8% cobalt for increased wear resistanceIce Hardenedâ„¢ cryogenically treated for up to 50 PCT longer lifeOptimized tooth form for up to 2X faster cuttingRoom for additional hole saw and arbor storage