TiAIN Coating Cobalt Drill Bit Set 29Pc Jobber Kit - Durable

In this review the TiAIN Coating Cobalt Drill Bit Set is judged as a practical, budget-minded kit for workshops and DIYers who need reliable performance on hard metals. The biggest reason to buy is the combination of an M35 cobalt core and TiAIN coating, which together boost cutting speed and extend bit life compared with uncoated HSS bits. The set's 29 sizes cover common needs from 1/16' to 1/2', and the compact metal index box keeps bits organized for frequent use.

Key Features

• TiAIN coating: The coated surface reduces friction and allows faster cutting of harder materials while protecting the bit to extend service life.
• M35 cobalt steel: The M35 alloy provides a tougher cutting edge that performs better on stainless steel, hardened steel and cast iron than standard HSS bits.
• Multifacet tip: The special multifacet tip improves drilling efficiency and centering compared with plain point bits for cleaner starts.
• Wide size range: The 29-piece selection from 1/16' to 1/2' covers fine to medium hole sizes so fewer trips to the toolbox are needed.
• Metal storage box: The small, strong metal case with size index keeps bits sorted and easy to transport for jobsite use.

Who It's For

The set is best for mechanics, metal fabricators and experienced DIYers who drill into stainless steel, cast iron and other hardened metals and want a durable, coated M35 solution without buying single premium bits. Its size range and hardened performance make it suitable for maintenance tasks, small fabrication projects and light machine shop work.

Less-suitable users include casual homeowners who only drill wood or soft plastics and those who expect industrial lifetime durability; some customers report bits dull or break under heavy misuse, so high-volume production shops should look at higher-spec, specialty tooling.

Pros & Cons

Pros

• Good value for money given the 29 sizes and coated M35 construction.
• TiAIN coating and multifacet tips give faster cutting and better starts on hardened materials.
• Compact metal index box makes storage and selection quick and tidy.

Cons

• Some users report the bits can dull or break if used aggressively, so they are not a substitute for premium industrial tooling.
• Sharpness and longevity vary with user technique and material; delicate tapping operations may require re-sharpening or replacement.

Specifications

Brand	MACXCOIP
Coating	TiAIN
Material	M35 cobalt HSS
Pieces	29
Size range	1/16' to 1/2'
Storage	Metal index box with size holders

Our Verdict

The TiAIN Coating Cobalt Drill Bit Set is a practical, cost-effective choice for those who frequently drill hardened metals and need a ready assortment of sizes. The M35 construction and TiAIN coating deliver noticeably better cutting and longer life than plain HSS bits, and the metal case helps keep a busy bench organized. For occasional woodworkers or heavy industrial users, alternatives tailored to those exact workloads may be preferable.

Frequently Asked Questions

Are these bits suitable for stainless steel?
Yes, the M35 cobalt composition and TiAIN coating make the set suitable for stainless steel and other hardened metals.

Does the set include a storage case?
Yes, the kit ships in a small, strong metal index box with labeled holders for quick size selection.

Will these replace premium shop bits?
They are a strong value for many users, but heavy production shops that demand maximum longevity may prefer higher-end specialty bits.