13Pcs(1/16"-1/4") Cobalt Drill Bit Set M35 HSS Jobber Length | for Hardened Metal, Stainless Steel, Cast Iron, Wood and Plastic, with Index Storage Case

Good drill bits. They cut through metal (stainless steal sheet metal) with no problem. Good quality bits and good value for the price. The plastic case is a bit flimsy though.

5 Starts all day! These bits drilled threw a thick stainless steel sink with the greatest of ease. Made the install quick and easy. Highly recommend!!!

I love a good drill bit set. There is something deeply satisfying about opening a fresh case of organized bits—it makes me feel like I can build a deck, fix the car, or at least hang a picture frame without putting 14 unnecessary holes in the drywall. This set is almost perfect. The Good: The case is sturdy and holds the bits tighter than I hold onto the thermostat setting in the winter. The larger bits are absolute beasts; they chewed through wood and mild steel like it was butter. The "Eh, Needs Work": I knocked off a star because of the smaller gauge bits. I tried to drill a pilot hole into a stainless steel bracket, and the small bit just sort of spun around on the surface like a breakdancer. It didn't "bite" at all. It was less of a "drill" and more of a "friction heater." Summary: Durability: High (for the big ones). Value: Great for the price. Performance: 90% excellent. Just be warned: if you need to do fine detail work on hardened stainless steel, the little bits might give you the silent treatment. Still, a solid addition to the toolbox. I’d tell you a joke about a drill, but it’s boring.

I make whirligigs and need to make a lot of small holes in wood. I have been happy with this drill set.

Very impressive on its functionality. I purchased before Milwaukee and Dwall drills and they did not performed correctly, as a matter of fact, they got broke and it took kind of long to perform the drilling. With this MACKCPIP cobal drill bit set, i drilled like 5 holes with out any issue. Except for the smaller drill bit got broke, but the other one i used worked more then great!!!

The MACXCOIP 13‑Piece M35 High Speed Steel Cobalt Drill Bit Set looks solid in the listing, but in practice these bits are very basic and don’t perform well on tougher materials like stainless steel. Wobble There’s a noticeable wobble when drilling, especially with the smaller bits. They don’t track straight, which makes precision work difficult. Drillability Despite being advertised for hardened metal and stainless steel, I couldn’t get through a 1/4” stainless steel plate even using a high‑power corded drill. They dull quickly and lose bite almost immediately on harder metals. Breakability These bits overheat fast, and once they get hot, they deform and snap into pieces if you apply even moderate pressure. Breakage is a real issue. Ease of Use They’re fine for soft materials like wood, plastic, or aluminum, but anything beyond that becomes frustrating. Frequent stopping to cool the bit or swap to a new one slows everything down. Durability Durability is the biggest weakness. The M35 label suggests higher heat resistance, but in practice they wear out and break far too easily. Look The set looks decent in the index storage case, and the bits have a clean finish out of the box, but the appearance doesn’t match the performance. Customer Service After posting this review as a 2/5 review the seller/manufacturer reached out to me without request offering me a full refund, no questions asked, no request to take down or modify my reviews. That said, I felt that was a class move and shows great customer service which deserves a star on its own so I’ve increased my score to 3/5. Overall, with the star added for great customer service this is a 3/5: a basic cobalt drill bit set that’s okay for light materials but fails quickly on stainless steel, overheats, and breaks under pressure. You get what you pay for here.

I'm rarely amazed but I had to drill through joints on a utility trailer. I didn't want to risk my overly expensive set and rolled the dice on these. Super impressed. Not one snag and they penetrate easily.

Absolutely love this drill bits. I broke an exhaust manifold bolt off in my f150 and these drilled it out with ease. Definitely worth the price

No era lo que esperaba muy caras y son de medida muy pequeñas, no llegan ni alos 10mm. Yo buscaba de 8mm. sta 14mm. Pero la descripción está muy confusa

Works well