Best Extra Long Drill Bits of 2026

"I found these bits to be high quality and just the right length to reach deep inside pipes. Using them in my drill press, I achieved excellent accuracy and depth control. For the price, they're a great deal and work perfectly."

"I needed these for predrilling holes through pressure treated 4x4s and didn't expect much, but they were better than expected. Even after drilling over 60 holes, the first bit kept going strong. Really impressed by their durability."

"The metal seems a little brittle, and I noticed the fluted part broke while drilling soft plastic. Also, they needed resharpening sooner than I'd like, but having a six pack helped."

"I was tackling some dense railroad ties and needed a long bit for my project. This bit drilled clean, straight holes with no trouble, even through nearly 12 inches of wood. At this price, I can easily keep a few spares on hand."

"I had to bore some very deep holes in hard Bocote wood, and this drill bit performed flawlessly—no wobble, no tear out, and the black oxide coating held up great. My only gripe is that the fluting could be deeper to clear spoil better on deep holes, but overall, it worked very well for my needs."

"After failing to find the right size at local stores, I ordered this on Amazon. It’s drilled through both brick and wood and still looks and works like new. The quality is impressive, and the price is far better than in-store. I’d buy other sizes from Bosch without hesitation."

"I was looking for a super-long drill bit to run a wire from my kitchen to the basement, and this one did the job perfectly. It was very affordable and worked without any issues. Based on my good experience with Bosch wiper blades, I trust their products. I expect this drill bit to last for many years, even if I use it only occasionally."

"As someone setting up a guitar workshop, I needed a drill bit that was rigid and wouldn’t deviate when drilling wiring channels. This Bosch bit fits the bill perfectly—excellent quality and reliability. I feel confident recommending it to other D.I.Y. builders."

"I bought this to drill through a facia board to locate a hole in my attic, and it worked great for my needs. Just be aware that the bit can bend if pushed at an angle due to its thin shaft, but overall it's a good value and well-made."

"I used this bit to drill through my 4x4 for a cable installation, and it was incredibly accurate and didn’t break. This is a must-have for anyone needing straight holes in thick wood."

"For my utility trailer repair, I needed to get through about 5 inches of C channel steel. This bit was sharp enough to make clean holes, and even after heavy use, it held up perfectly."

"I needed a long bit for my treadmill project, and this one cut through the metal effortlessly, almost like 'butter.' It’s thick, durable, and definitely suitable for multiple DIY tasks."

"I was dealing with a defective pan handle on my cast iron skillet and needed an extra long, sharp bit. This drill bit worked perfectly and got the job done in less than two minutes. Great value and just what I needed."

"I often need to drill through thick wood, masonry, and brick siding, and this bit made it through all the layers with no problem. Durable and long enough for tough projects—definitely worth the price."

"Needed a bit to drill straight through for a lag screw joint, and this one did the trick. It was a bit too long for my drill press, but after trimming it, it worked perfectly and is now part of my go-to collection."

"I bought the 8-inch 1/8-inch bit to pre-drill holes in cedar fence boards, and it worked perfectly. The extra length let me drill through eight to ten boards at once, saving a ton of time. The bit stayed sharp and strong, even handling knots well. Just be careful at the start to keep it straight, but overall, this tool made my project much easier and more efficient."

"I needed a drill bit long enough to measure the depth of bowls on my lathe, and this one was just right. It arrived extremely sharp and seems to be made from good quality steel. So far, it’s held up well, and I’m happy with the purchase."

"I used this bit for multiple billets of 1045 steel on my lathe, and it performed flawlessly. Good build quality and no issues at all. I’ll definitely be ordering more sizes in the future."

"I really like how the longer bits make it simple to drill holes for running model railroad wiring through the layout base. It’s a great solution for connecting wires to connectors efficiently."

"As an alarm installer, I use this drill bit several times a week and it typically lasts me about three months. The Black Oxide coating makes it strong enough for both wood and light gauge steel, which is a huge upgrade from wood-only bits. The bit doesn’t walk or chatter, and the point stays sharp even after repeated use. This is my go-to long drill bit, and I always find the best deal for it on Amazon."

"I needed a drill bit with extra length to expand a tight hole in my studio strobe for photography umbrellas. This bit worked perfectly with my DEWALT drill, and it had no trouble cutting through hard plastic quickly and efficiently. The long length allowed me to reach tricky spots, and after the job, the bit was still in great condition. It solved my problem without the need for expensive new equipment."

"I picked up the 5/8 in drill bit mainly for enlarging holes in plate steel. The price was unbeatable compared to local stores. While it was a bit slow and needed steady pressure, it handled four 3/8 in steel plates without issue. The bit can be resharpened easily, though I did notice the core is thinner than expected. Overall, it’s solid for the money."

"I found these drill bits to be excellent for reaching and probing into areas where markings were missing. So far, not a single bit has snapped during use."

"Despite some concerns, I felt these bits handled well and drilled cleanly through my project, even though their length made me worry about flexing. They performed well for my needs."

"I ordered these thinking I'd get two bits, but only one was included in the package. After a quick message, Amazon resolved the issue quickly and sent another. The bit itself is very sturdy, though it can break if dropped."

"I can’t thank BOSCH enough for this fantastic, uniquely thin and long drill bit. It’s the only one that lets me quickly and accurately drill reference holes in challenging spots like attics and crawl spaces. The process is so simple and mess-free, and patching the tiny holes after is a breeze—no sanding or painting needed!"

"I needed to find ceiling joists and this long, slim drill bit was perfect for the job. The holes it made were barely noticeable on my popcorn ceiling and super easy to conceal with drywall compound. Couldn’t have attached things securely without it!"

"These drill bits are both affordable and high-quality. I accidentally broke one when I used too much force on steel, but that was my fault, not the bit's. Even after sharpening, it still cut well. If you use the right speed and pressure, these bits last a long time—especially with cutting oil for metal jobs."