SALI Cobalt Drill Bit Set 5pcs 1/2 in - Durable M35 Metal Bits

In this review the SALI Cobalt Drill Bit Set 5pcs 1/2 in is evaluated for people who need a compact, tough drill bit kit for frequent metal work. The bottom line: this set stands out because of its industry grade M35 cobalt composition and a connectable index case that keeps bits organized, making it a practical choice for mechanics, fabricators and serious DIYers who drill hardened metals. The review focuses on real use, cutting performance and storage convenience rather than marketing claims.

Key Features

• M35 cobalt steel: The 5% cobalt content increases wear resistance and helps the bits hold up when drilling hardened metals and stainless steel.
• Fully ground 135 split point: The split point and straight shank reduce walking and let users start holes without a center punch for faster, more precise drilling.
• Spiral groove design: Fully ground flutes clear chips quickly and lower friction and heat for cooler, longer cutting sessions.
• Package of five 1/2 in bits: Five identical large bits cover common heavy-duty needs without excess small sizes to manage.
• Connectable index case: Molded size markings and a connectable storage system keep the set organized and save workspace room when linked with other accessories.

Who It's For

The SALI set is best for tradespeople, home mechanics and metal fabricators who often drill into stainless steel, cast iron, sheet metal and other tougher alloys where ordinary HSS bits dull quickly. It also suits DIYers who want a small, rugged kit for heavy repairs or automotive work.

Those who should look elsewhere include users needing a wide range of small sizes for precision woodworking or electronics, and hobbyists who prioritize ultra-fine finish over heavy-duty durability; this kit focuses on larger, industrial-strength 1/2 in bits.

Pros & Cons

Pros

• High durability from M35 cobalt composition, which resists wear better than standard HSS.
• 135 split point and straight shank improve accuracy and reduce bit walking when starting holes.
• Efficient chip clearance and lower heat buildup due to the fully ground spiral grooves.
• Sturdy index case with molded size labels and connectable design for tidy storage.

Cons

• Only supplied in a single large diameter (1/2 in), so it is not a complete set for varied projects.
• Some customers report mixed feedback on initial sharpness, so occasional resharpening or testing may be needed.

Specifications

Brand	SALI
Material	M35 cobalt high speed steel
Number of pieces	5 pcs
Size	1/2 in (each)
Point style	135 split point, fully ground
Case	Connectable molded index storage case with size markings
Recommended use	Hardened metal, stainless steel, cast iron, wood, plastic

Our Verdict

The SALI Cobalt 5pc 1/2 in kit is a solid choice for anyone who needs a small, durable set of large-diameter bits for heavy metal work; the M35 cobalt construction and split point design deliver real durability and improved accuracy. It is good value for professionals and serious DIYers, though buyers wanting multiple diameters should consider a larger multi-size kit.

Frequently Asked Questions

Can these bits drill stainless steel?
Yes, the M35 cobalt composition and 135 split point are designed for drilling stainless steel and other hardened metals when proper speed and pressure are used.

Do the bits come sharp enough to use right away?
Most users report good cutting quality and value, but sharpness feedback is mixed so checking or light sharpening before critical work is reasonable.

Is the storage case portable or expandable?
The molded index case is connectable to other accessory storage, which helps optimize space and keeps bits organized for transport.