BOSCH TI2139IM 1-Piece 3/16 In. x 3-1/2 In. Titanium Nitride Coated Metal Drill Bit Impact Tough with Impact-Rated Hex Shank Ideal for Heavy-Gauge Carbon Steels, Light Gauge Metal, Hardwood

I have used it on multiple surfaces different surfaces: hard wood, dry walls, bricks and it seems to work well and hold up. Its strong and easy to use with both traditional drills and impact drives.

Good quality and fair prices.

Lasts a long time cutting into metal

Easy to use. Small base fit into my 3/8 drill arbor.

Works great! I used it right away and like the added base to use with my hammer drill.

Excellent drill. Strong and sharp. In the size needed to drill out pop rivets. Easy swap when changing bit sizes since the shanks are the same 1/4-inch size, The drill size is indicated on the shank.

It did exactly what needed so all good

It's a nice set of 9 drill bits that plug into the 1/4" hexagonal chuck of many electric screwdrivers. The bits WOBBLE a little bit in the chuck of my Metabo HPT screwdriver, which is not the fault of the drill bits. I imagine this would happen with any electric screwdriver that uses a quick-release, pull-collar type of chuck. The holes you drill with this set-up will be imperfect, but it's close enough for prototyping or hobby work. The bits are sharp and the material is good quality.

Worked very well for my application

Prático pois tem como usar em parafusadeira de impacto

ótima broca, pau pra toda obra

Gracias 100% recomendable Bosch es calidad y el precio muy bien

Now I use them all the time. It's surprisingly easy to convert, and these are the best drill bits I've used to date.