Combination Drill and Tap Bit Set with Quick-Change Adapter of 13Pcs, 6 SAE Sizes: 6-32NC to 1/4-20NC, 6 Metric Sizes: M3 to M10,Suitable for Drilling Tapping Threading Countersinking

Purchased this set to resolve a fit issue and this kit gave me the tools necessary to finish the job.

Stripped a nut, this fixed in quick. Went on to strip two bolts, ditto. Good value.

Size is smaller than what the picture implies, but ok. I have not used any of the bits but quality appears to be good.

Very durable, the case is nice to keep them stored, true to size, functions well and a great value for the product.

Muy buen juego para trabajo de tornero, trae muchas piezas , muy útil

Brittle. About myself; a master fabricator, welder, machinist. Doing it for 50+ years. I like the original design, still have a few from "Premier Fastener". A tap drill cut on the end of a tap. These simply shatter at the very first attempt in 6061-T6 quarter inch thick sheet broke at the very first entry of the threaded section in attempt to make a 10-32 threaded hole. I was hoping to thread through making 5 threads. If these were properly made, they might do steel (as advertised). So don't be duped, don't buy. Must be made of chinezium. Will attempt returning the item.

Its as to be expected- blow molded case wont latch (plastic too thin)- arrived all mixed up. Both the die holder and the tap holding bar died first use- steel on tap holder jaws bent and stripped threads, screw on die holder so soft butter might hold better- I am afraid to replace with stronger screw- thread gauge thinner than I'd like- but works. Tap and dies...seem ok quality. I needed a metric set for repairs- and will use my other sets holders.

Worked perfectly! Had to drill into an old rusted bolt in my washer machine and used these to create a new threading so I can use a smaller bolt to fasten everything down. It worked as advertised!