toolant Four Spiral Flute Cobalt Step Drill Bit(Pro Max), 4-22mm Impact Ready Four Spiral Flutes Unibit Step Bit, 1/4" Hex Shank Unibit for Metal, Stainless Steel, Aluminum, Wood, Plastic

Very good stuff

Great bit of kit

I order this for work as it looked the best on the market, but unfortunately I never got to use it as it was stolen out of my impacter on site before I even got to use it. But looked to be a good job

This step drill bit is very good , the holes it drills out are very accurate and clean edges, performs flawlessly, woeth the money a great product

Used it twice and it snapped. I work on site worked 1 time and drilled the second hole for a dis board and it snapped very a disappointed. Only got it that day.

Only used to cut 4 x 20mm holes but seems a good piece of kit.

Very impressed ,

i bought some so called cobalt drills 13 drills blunted them all drilling 6 holes in stainless steel .this tool enlarged all 6 holes no problem and is still going .

I had one for a little over a year and use just about every day between copper and galvanized metals. Stayed sharp the whole time and never had any problems with it. Definitely worth the money and mine only broke cause my impact took a 15’ fall and landed right on it

Alles Gut

En soit le forêt fonctionne bien, le problème est que son axe de support est trop fragile, il a cassé net dès la première utilisation arrivé vers le diamètre 32/33mm, l'effort est trop important sur le forêt pour un si petit axe.

This is the best step drill bit I have ever owned to date. Very well made and works exceptionally well.

well designed;6+ rating