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🔩 Drill Smarter, Not Harder — The Ultimate Step Drill Set for Every Pro & Maker
The RENNIE TOOLS 3-piece large HSS step cone drill set features titanium nitride coating for enhanced durability and sharpness. With three versatile sizes (3-12mm, 4-12mm, 4-20mm) and a 1/4" hex shank, it delivers precision hole cutting across a wide range of materials including steel, aluminum, wood, and plastics. Packaged in a sleek blue nylon pouch, this set is designed for both professional tradespeople and DIY enthusiasts seeking reliable, long-lasting performance.






| ASIN | B07RSZ4QHL |
| Best Sellers Rank | 59,844 in DIY & Tools ( See Top 100 in DIY & Tools ) 701 in Drill Bit Sets |
| Brand | Rennie Tool Company |
| Country Of Origin | China |
| Customer Reviews | 4.4 out of 5 stars 290 Reviews |
| Finish Types | Titanium Carbon Nitride |
| Finish type | Titanium Carbon Nitride |
| Manufacturer | Rennie Tool Company |
| Manufacturer Part Number | HSS3PCSTEPDRILLSET |
| Material | High Speed Steel (HSS) |
| Minimum Bore Diameter | 3 Millimetres |
| Number of Flutes | 2 |
| Number of Pieces | 3 |
| Point Style | Taper Point |
| Point style | Taper Point |
| Shank Type | Hex |
| Shank type | Hex |
| Surface Recommendation | Medium hardness and soft surfaces |
| Tool Flute Type | Spiral |
| Tool flute type | Spiral |
| Unit Count | 1 count |
R**L
Quality drill
Nice drill with multiple size. Sharp but only used once. Served its purpose.
B**R
Used for enlarging holes with stripped threads for rivnuts
I used these to enlarge some holes in a steel door with stripped threads so that I could fit rivnuts. They are good for the price at least for what I wanted. I would always drill a pilot hole first.
A**R
Good quality
I use in electrical work and is good quality
S**T
Bargain
Used the three bits over the past week. Have to say for the price (£3.99), absolute bargain. I’m not using it on thick metal but have used it on 1.5mm metal and aluminium and it has worked really well, and very sharp. I inky bought them for what I’m using them for as I think anything larger metal would snap the bit. For the price I think it’s a no brainer.
K**!
Sharp and do the job
Good sharp drill bits.
P**E
neat holes
Early first impression review ..smashing, I wanted to cut some various sized holes in plastic electronics boxes and these tools cut very nice neat holes like a knife through butter. and without even needing a pilot hole to start
T**N
Not great
Got blunt to quick only used twice on metal good on wood, I thought they would of been better quality job performance bad...
C**D
They do the job - for a while
Generally speaking they do the job. The pouch is useless and may as well go in the bin to be honest - I don't use it. The largest bit isn't that sharp on the smallest size, so you need to pilot with one of the smaller bits which is a bit of a pain. They're generally still sharp but aren't exactly going to outlive you. You get what you pay for o guess so can just buy another set when needed at this price.
Trustpilot
4 days ago
2 weeks ago