ACTOOL Double Spiral Industrial Drill Cutting Tools Review

Drills fast. But the tip can quickly become blunt. 1/8 ago first with a cheap drill. then in this step the drills are cut to 1/2 inch in seconds.

Good step drill. I received a complete set of stepper motor bits in 3 sizes from ACTOOL. I love that this is true high speed steel that should stay sharp much longer than many of the cheaper coated carbon steel bits. Only made a few test holes with this racquet and it cuts very well but long term sharpness remains to be seen. The bit comes in an individual plastic packaging similar to that used for end mills, which is very convenient so you don't have to worry about damaging the bit in your…

I don't know how much Hype to believe this twist step drill but after using it to drill out some wing washers to fit a larger screw I have to say the cutting action is really improved over the standard step drill and the spiral pattern seems better at clearing chips than a standard -Step drill bits. The diameter markings are easy to read and the quality of the bit looks good. I expect the high speed steel material that makes up this bit will last longer than typical titanium coated step bits…