3PCS Unibit Step Drill Bit Set (1/4"-7/8"), M35 Cobalt, TiAlN Coated for Superior Durability, Spiral Cone Drill for Stainless Steel, Sheet Metal, Aluminum & Plastic

As described… it dies its job, metal plates goes through easily.

Worked nicely on mild steel to enlarge square carriage bolt holes.

Strong,sharp & ideal

It got the job done quickly very fast.

buen producto

Excelente articulo Esas cuchillas son bastante filosas

Works great

I was a little hesitant to try these bits on a recent vehicle project. They worked great! They are very sharp and even after drilling out two grade 8 bolts, they are still very sharp. Value for money: I didn’t want to spend too much money and these seemed like a great price. They outperform my expectations.