🔧 Drill deeper, drill smarter—own the precision edge!
The QISF 7Pcs 300mm Extra Long Twist Drill Bits Set includes 7 high-carbon steel drill bits (4-12mm) and 9 adjustable depth stop collars (3-16mm) designed for precise, controlled drilling in wood, plastic, and soft metals. Engineered for durability and accuracy, this set empowers professionals and DIYers to achieve flawless hole depths with extended reach and secure bit stability.
| ASIN | B07PS6TDDP |
| Best Sellers Rank | 283,023 in DIY & Tools ( See Top 100 in DIY & Tools ) 2,308 in Drill Bit Sets |
| Brand | QISF |
| Customer Reviews | 3.6 out of 5 stars 334 Reviews |
| Cutting Angle String | 118 Degrees |
| Cutting Diameter | 12 Millimetres |
| Cutting angle string | 118 Degrees |
| Cutting diameter | 12 Millimetres |
| Finish Types | Steel |
| Finish type | Steel |
| Manufacturer | QISF |
| Manufacturer Part Number | NECALON |
| Material | High Carbon Steel |
| Minimum Bore Diameter | 3 Millimetres |
| Model Number | NECALON |
| Number of Flutes | 2 |
| Number of Packs | 2 |
| Number of Pieces | 16 |
| Point Style | Split Point |
| Set Name | True |
| Shank Type | Hex |
| Shank type | Hex |
| Surface Recommendation | Wood |
| Tool Flute Type | Spiral |
| UPC | 710654692291 |
| Unit Count | 1 count |
T**N
decent set for the price
if you need a super long thin drill bit then this is for you. be careful though as the thinnest one is pretty fragile.
M**E
Very Soft Metal
After reading some of the reviews here I decided to give them a go hoping they would last for the small amount of use I needed them for. First hole drilled fine but the 2nd hole proved too much. The metal is very soft and the slightest bit of heat makes them bend like rubber and literally unwind. Would not recommend.
C**I
Great bit of kit .
The lengths are very much an advantage for me.
G**R
Ok but very, very flexible
Purchased these to do fome work to my log cabin office. I needed to drill through around 15cm of wood to run cables, etc. First impression upon opening them was that they are very cheap, the plastic wallet the come in was already starting to fall apart. Upon trying to use them I found they were not straight and any pressure I put upon them caused them to bend further.. That said, they did the job well enough.. although I was only drilling through pine, anything harder and I don't think they would have managed.. The drill bits are soft so that did allow me to straighten them slightly, but i don't really see that as a positive.. Overall they did the job but I wouldn't buy them again...
M**A
ok
perfect
T**M
Useful but treat them with care
Use the thinner drill bits carefully not to snap them. They are thin and will definitely break as I found out. Having said that they do work just fine, but I wouldn’t recommend using such a long thin drill bit in hard wood.
P**Y
WORST QUALITY I HAVE EVER SEEN
Probably the worst quality I have seen on any item I have ever purchased. First use of them today and two broke on the first hole they drilled. Upon drilling a hole the bits just twisted and almost unravelled from a drill bit to a straight piece of metal. ABSOLUTELY SHOCKING, never seen anything like it.
W**S
Well made and good value
Works well in wood and the extra length makes drilling holes through 100cm posts easy. The gauges work well and has made accurate drilling to put down decking round my house.
A**S
Alles io
Alles io
P**O
Si spezzano o si piegano sotto sforzo
Troppo debolì sotto sforzo, specialmente le più sottili, taglio scarso, non affidabili.
A**O
Punte 300 mm da legno
Prodotto scarso materiale che sembra latta
S**I
Selbst geschenkt noch zu teuer
Die Bohrer sind alle verbogen, ins Holz gebohrt verkanten sie dadurch, sodass die volle Länge nicht nutzbar ist. Absolut nicht empfehlenswert, wenn man ernsthaft damit arbeiten möchte.
Trustpilot
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