Tried to go though 1/16" stainless steel with cutting oil, the bit burned up immediately

Saved me a ton of time when drilling stainless steel!

Used on some steel plate 2mm -- worked great and held up w/o issue.

Burnt out (even though I did use oil) on 1st use drilling faucet holes on 1/16” stainless steel sink

Dulled 4 bits on 2 holes in 1/4 stainless steel 316

I used this to drill 18 guage stainless steel

works well drilling 3/16" steel in drill press and enlarging/slotting holes in this steel

Being cobalt, it SHOULD work well on stainless steel,

I needed a cobalt drill to widen some holes in hardened steel

I used the 3/4"-1-3/8th" to try to drill two holes in a stainless steel sink (thin) to mount a faucet and soap descender

I'm a mechanic and used these a lot I've drilled wood steel aluminum and stainless steel with

These carve shiny slivers of stainless steel continuously along all of the cutting edges as I take a sip of beer and spin the pin vise with one hand

go through a steel conduit pipe like cold butter

Purchased to cut a 1 1/4" hole in a stainless steel sink, worked like charm.

Good DIY Step Drill Bit Set if you aren't trying to drill in hardened steel or steel daily

I wanted to widen the 5/16" hole in a stainless steel tap wrench to 1/2" and needed the hole to remain perpendicular to the wrenches top and bottom

NOT SHINY STEEL!!!

Unfortunately, after just one single use on 1/8 type 316L stainless steel with the larger bit, it was ruined

Worked fine but it is wearing the bit down real fast going through a stainless steel keg

I will be returning these bits and i will have to go purchase a bit that can cut through silly 16 guage steel.

They didn't have a sharp enough edge to get into stainless steel though.

Drilled holes through cold rolled steel flat stock

I bought a set of these 5-6 years ago for drilling stainless steel electric panels at work.

They drilled very quickly through stainless steel

I love this product, I drill through 304 stainless steel quite often and these tear them up

Drilled in a stainless steel table.

I will have to try it with some harder steel, disappointed it didn’t get through to the end like I would with a harbor freight unit.

I think these will be just fine for plastic to non hardened steel and certain steel alloys

However, if you have any expectations of using them on harder materials (eg, 316L or 304 stainless steel), then think again

The bit is pretty dull from boring the hardened steel of the wheel stud, but it did the job when basic drill bits would not.

Worked great in drilling ½” hole through thin wall (~1/32") stainless steel.

Same thing with slightly thinner 3/32" type 316L stainless steel

Worked great in drilling ½” hole through thin wall (~1/32") stainless steel.

Used for boring through some stainless steel on truck

These may be fine on softer steel for the DIYer but they won't hold up everyday use for the tradesman

I have not had a chance to drI'll stainless steel yet

Worked perfectly for drilling a hole in a stainless steel sink.

Using these with stainless steel

n’t disappoint