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Cleveland C70366 60 piece cobalt drill bit set in transparent case

Cleveland

Cleveland C70366 60PC NAS907 Type J Cobalt Drill Bit Set

SKU CH-MXPK-VZ6QX

A 60-piece cobalt drill bit set with 135-degree split points meeting NAS907 Type J specification

  • Product colorTransparent
  • 60-piece set covers a wide range of drilling tasks
  • 135-degree split point starts on contact and reduces walking
  • Cobalt steel construction resists heat and extends bit life
  • NAS907 Type J specification meets aerospace-grade standards
  • Straw bronze finish adds corrosion resistance and easy identification

Cleveland C70366 60-Piece Cobalt Drill Set

The Cleveland C70366 set supplies 60 cobalt jobber-length drill bits for heavy-duty metal drilling. Each bit features a 135-degree split point for accurate starts and reduced walking. The straw-bronze finish identifies the cobalt construction and resists wear. This NAS907 Type J kit suits professional mechanics and fabricators.

Suited for high-volume steel and alloy work

Ideal for users drilling stainless steel, titanium and other hard alloys where standard high-speed steel wears quickly. The 135-degree geometry handles tough materials without excessive pressure. Buyers needing only occasional wood or soft-metal holes should consider a smaller high-speed steel set instead.

60-piece count defines workshop coverage

The set contains exactly 60 bits, providing a broad range of diameters for maintenance and production tasks. Verify that the quantity matches the number of sizes your operations require before purchase. No other specification in the data determines the scope of this kit.

How it compares

Measured against everything we stock in Ratchets, Sockets & Drive Tools, at today’s prices. Recalculated every night.

Price $190.99
Pricier than about 90% of the 418 comparable items (median $20.99).

Specifications

Product
Brand nameCLEVELAND
Product colorTransparent

Questions about this item

Will the 135-degree split point on these cobalt bits start cleanly in the hardened steel sockets I already use?

The 135-degree split point is designed to reduce walking and start accurately in tough materials such as hardened steel, so it works well with the sockets you keep.

How can I verify the set meets the NAS 907 Type J standard after opening the case?

The case is labelled with the NAS 907 Type J designation and contains 60 jobber-length cobalt bits with a straw/bronze finish, matching the standard's visual identifiers.

Does the 60-piece case include every drill bit size I need, or are extra bits sold separately?

The set supplies 60 jobber-length cobalt drill bits in a single case; no additional bits are included or required to complete the listed assortment.

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