Accusize - 18 Pcs/Set H.S.S. Tap & Drill Set, Metric, #0001-0052

Drilled and tapped medium carbon steel like a dream. Very happy with this product. Even broke through the worked hardend bottom from a previous attempt.

I've had this set for about 2.5 years and have used it a lot. I've manually drilled, used this in my milling machine, and also in a mag drill. I'd say that's pretty diverse. I have ran Anchor Lube most of the time when using them, for whatever that's worth. Here's what I can say about them. They've held up great. I've had no issues, no chips, and the drill bits still are pretty dang sharp all things considered. The case is nice and I think this set will keep on truckin for years to come. If you need a good set of metric drill and taps that will get the job done, this set considers strong consideration. One tip is buy cheapish pilot bits for larger holes, and use that to remove a bulk of the material. That saves wear and tear on the specialized bits. I think I run like a 5/32 cobalt bit most of the time and then following it up with the proper drill size for the tapped hole I need to make. Works great.

Get the job done. Good tools. Drill the right size hole and tap the metal. The tap is sharp, cut the metal easily but it may be new. Let see. Will keep the tool for future use. Wide range tap sizes. Fit most scenarios. It saves my day. One engine mount bolt is broken. Can't retract it. Drill a hole on top of the broken bolt and tap a new threaded hole. Tighten a new SS bolt. Will drive the car for a summer vacation soon. Need a secured engine desperately.

Just as advertised. Work great

I ordered both UNC and Metric sets. I ordered these because I could not find any that HSS and not 4 times in price. if you are doing production you need the higher priced parts but as a hobbyist these offer great value. What no one tells you is that all cheap taps are really for chasing to repair threads not for forming threads. I did some M10-1.5 threads without issue but 1/2-13 tap broke on first attempt. It was an over torque failure, not a manufacturer defect. Sometimes this happens even with good taps. I emailed Accusize with pics and followed up with a call next day. After providing them with order details they sent me a replacement tap. The replacement tap is spiral tap with 3 cutting edges (vs 4 on the original). It results in a beefier core with less material eaten up by the flutes. Any that break in my set, i will replace with spiral. I would rate Accusize service as exceptional. I saw a bad review on the drills. I believe they are fine for the price point. You can get better ones for more money. I hope users know to drill in steps and don’t try to drill larger holes in a single step. I only intend to use the included drills to do at most 1/16” cut or less. Use your 1/64” set to get as close to the final tap size and then use the included bit for final go.