amoolo Cobalt Drill Bit Set (1/16"-1/4",13 Pcs), M35 HSS Metal Drill Bits for Steel, Stainless Steel, Hard Metal, Cast Iron, Plastic and Wood

I leave very few reviews, yet want all to know these are excellent quality, sharp bits that work exceedingly well for my use in drilling starter holes in stainless steel. Use 1/4" bits of the same brand to make my final hole.

Impressed by these drill bits. Purchased for drilling ¼" holes for tension cable railing. Drilled 84 holes through ⅛" think galvanized steel tube with a single bit. Still have 9 x bits left brand new, and the first one is still good.

Quality drill bits! I was installing a boat lift in my slip. Normal bits burned easily drilling thru galvanized steel. These were recommended to me. Only burned one.

Just drill bits. Nothing special.

They cut good

Great drill bits at a good price! I have gotten a lot of "mileage" out of each bit before dulling. Very satisfied with this brand.

The Amoolo 1/4" Cobalt Drill Bits are sharp and cut through metal, wood, and plastic with ease. They don’t overheat quickly, and the precision is great. The value for a 10-pack is solid. However, I noticed they wear out faster than expected when drilling through harder metals. For light to medium-duty work, they’re excellent, but for heavy use, they might not last as long. Overall, a good buy for the price!

There not the best drill bits for drilling wood deck down to steel, they are only good for 2 to 3 holes