CaRoller 29-Piece M35 Cobalt Drill Bit Set with Cup Holder (Up to 1/2")

What people love (and don’t love)

What people love

Drill bits are very sharp and maintain their edge well.
Works effectively on metal, wood, plastic, and sheet metal.
Durable and suitable for repeated use with proper technique and oil.
Includes a practical cup-type holder that keeps bits organized.
Good value for the money with a wide range of sizes included.
Solid performance on tougher materials like steel beams and CR 1018 bar stock.

What people don’t love

Not as effective on very hard metals like stainless steel for some users.
Holder fit can be too tight, risking damage when reinserting bits.
Some find better cutting performance in more expensive sets.

Sharp, durable drill bits great for various materials, though may struggle on very hard metals and the holder can be inconvenient.

Summary based on customer review evidence.

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Quick facts

Brand: CaRoller
Price: USD 59.97
Rating: 4.60 (826 reviews)

If you want one set that covers a wide range of common bit sizes for shop work, home projects, or jobsite use, the CaRoller 29-Piece M35 Cobalt Drill Bit Set is built to be a practical, grab-and-go option. The set uses cobalt steel with an amber coating for durability and wear resistance, and it’s organized in a cup-type round case that clips to a tool belt to help keep your bits close at hand.

You can view the current price and full details on Amazon here.

Each bit features a 135-degree split point and a fully ground twist design aimed at self-centering starts and cooler drilling by reducing friction. It’s intended for a variety of materials, including stainless steel, cast iron, sheet metal, hard plastics, and wood—making it a versatile pick when you don’t want to swap between multiple sets.

The 29 included sizes range from 1/16″ up to 1/2″ (including fractional 64ths increments), giving you a lot of coverage for pilot holes, step-ups, and general-purpose drilling.