13 PCS Cobalt Drill Bit Set M35 HSS Twist Drill Bits 1/16"-1/4" for Hardened Metal, Stainless Steel, Cast Iron, Plastic and Wood

Worked great on my 60 year old vent windows! Drilled holes like a hot knife through butter!

Very good drill bits to use around home

Have seen similar setups from the high end parts shops stock something very similar. Strong case, and the impressive thing about these is the machinist measurements on the bits. Sharp and runs the job. Did not disappoint. Prompt delivery

as advertized by seller

These drills are HARD and SHARP and they wear well. Drilled through at leat 8mm long stainless bolt that was stuck in my brake caliper holding the wheel speed sensor in place. Drill slow and press hard.

Aun no las tuve que usar

*****

These are not cobalt. Do not buy these they are the cheapest version of high speed steel and way to brittle. Snapped 3 of these on the job and some of them were so soft they bent. Stay away.