The Alpha SM25CO TUFFBOX Cobalt Heavy Duty Drill Bit Set is designed for tradesmen tackling tough materials such as stainless steel, high tensile steel, and cast iron. This 25-piece set features cobalt drill bits ranging from 1.0mm to 13.0mm, increasing in 0.5mm increments. With a 135º split point design, these bits cut faster and reduce wandering, delivering precise results.

Manufactured from fully ground HSS cobalt, these drill bits offer increased strength and a longer tool life, even under heavy-duty conditions. The set is housed in a durable TUFFBOX case with rugged rubber grips and a strong locking catch for secure storage. Each set also includes a feeds and speeds chart, making it easier to choose the correct drilling parameters for various materials.

• 25-Piece Cobalt Drill Bit Set: Includes sizes from 1.0mm to 13.0mm in 0.5mm increments for versatile drilling applications.
• Heavy Duty Drilling: Ideal for stainless steel, high tensile steel, and cast iron.
• 135º Split Point: Cuts faster and reduces wandering for greater precision.
• Fully Ground HSS Cobalt: Increases strength and extends drill life, especially under tough conditions.
• Durable TUFFBOX Case: Tough plastic case with rugged rubber grips and a strong locking catch for secure storage.
• Feeds and Speeds Chart: Included inside every set to guide proper drilling parameters.

Q: What materials can these drill bits handle?
A: These bits are ideal for heavy-duty drilling in stainless steel, high-tensile steel, and cast iron.

Q: How many bits are included, and what sizes are available?
A: The set includes 25 drill bits, with sizes ranging from 1.0mm to 13.0mm in 0.5mm increments.

Q: Is the case durable for worksite use?
A: Yes, the TUFFBOX case is designed with rugged rubber grips and a strong locking catch, making it ideal for tough worksite conditions