13Pcs Cobalt Drill Bits Set, M35 HSS 135 Degree Tip, Twist Jobber Length Drill Bit Kit for Hardened Metal, Cast Iron, Stainless Steel, Plastic and Wood with Storage Case 1/16"-1/4"

working well for the few things I've used them for so far. cut quickly and cleanly. nice metal box to keep them in and organized as well.

Nice, inexpensive set of drill bits. They're not very long, so make sure you know what you're getting. They're nice to have as replacements for others that I have broken so they fit my need perfectly. I'm not expecting to drill through diamonds with them...

I’ve Wanted and Searched For 115 Piece HSS Cobalt Drill Bit Set For More than 5 Years! When Prime Days Came, I Thought I Was Getting a Great Deal, as The Normal Price Was Inflated Compared to What It’s Listed At Right Now! As It Is, I Saved $14! THE GREAT LIE, PRIME DAYS! The Price Was Suppose To Be 35% Below Normal Price, Plus a 10% Coupon! But, I Used the Product the Day After I Got It To Drill Out a Hardened Steel 10mm Bolt in My Engine, That I Managed To Snap Off! It Went through it Like Butter with Cutting Oil! Cleaned Up Easily to Return to It’s Place in the Box! Which Does Seem Pretty Sturdy But, We’ll See How it Holds Up in About 5-10 Years! I’m Wanting These to Be The Last Bits I Ever Buy! But, Like Most, We’ll See How the Smaller Bits Hold Up as They Tend to Snap Easily! At Least That’s Been My Experience Over 40 Years! What I Really Wish They Would Have Done, is Identified The Drill Bit Size, High Lighting 4mm to 12mm or What Ever is The Largest, on The Right Wing! The Bits Are Identified By Size on The Left Wing and The Back! I Don’t Know the Reason, They Couldn’t Provide More Information on The Right Wing Besides A-Z! It Would Make Things So Much Easier! Now I Have to Search The Internet for a Sizing Chart To Identify The Size Associated With The A-Z Drill Bits! Imagine, Having To Go To a Competitor Who Actually Provides Some Help & Insight to Their Customers! I Know There Are Some, That At Least Have a Chart for Download, About the Size of Their Bits, Including The Size of A-Z Bits! As I Said, I’ve Been Searching For a While! This Will Definitely Be On My Mind, If I’m Looking for Other Tools and GM Comes Up At a Possibility!

Worked perfect as advertised.

Durable and worth of money. These bits are seem very durable as far as the strength of the metal and they cut very well

They cut metal good! Used on regular drill and my mag drill. 1/2 steel no problem. Time will tell but I think I will Like them!! Slow speeds and lots of pressure!

Seems to be good set of drill bits. Really sharp. Fast shipping

First time I tried to drill a 3/8" hole into a pipe with a cordless drill, the bit snapped in half on me. Not sure if the integrity of these bits can actually handle drilling through metal.

So far so good. Broke my original one and bought these. They drill nicely through stainless steel and I've only been using the 1 so far for a bunch of stainless holes.

Increíblemente buenas, un excelente filo las e probado en aceros tratados y sin problema perforan, recomendado al 100%

Very impressive with quality of the product. Drilled a lot of holes on the struts for a week already and they’re still very sharp.

Si es bastante resistente lo uso para barrenos en aluminio.l

They are very good quality drill bits, they don't get damaged easy and they distribute heat very evenly so they don't overheat. I would recommend buying. But, they came with a broken case so it didn't open properly but I fixed it in a couple minutes with bolts and lock nuts. The original pivot bolts on the case are very weak, might want to replace them.