9mm Slide Lock Utility Knife (A-1) - Multi-Purpose Retractable Precision Knife w/ Snap-Off Blade, Replacement Blades: Any OLFA 9mm Blade

This is an essential tool in my shop. It’s basic but extremely functional. The Olfa blades and knives are classic Japanese manufacturing. Top quality!

I bought this knife over 5 years ago and it's my go-to for practically everything I need a cutter for. I have snapped off 2 blades over the years since it stays sharp enough for my needs and I sometimes use it fully-extended. A few months ago, I accidentally dropped it from about 3 feet high, landing on the tip, and the blade broke leaving just 5 snap points. Will be buying more blades and can imagine that this thing will last a lifetime. Well-built, compact, and inexpensive for what you get.

I tell everyone that they should have one of these Olfa 9mm utility knives in every single room of the house with a drawer. You will be amazed at how often this device comes in handy. I have used Stanley knives for 30 years (and still do) but these Olfas are so incredible for everyday use. The quality is incredible: the blade lasts a long time, the cuts are perfect, they are safe to use and keep in every single room. Order a half dozen and share them with people. They will tell you, "I thought that knife was stupid when you gave it to me, but I use it every day!" Best utility knife around.

The OLFA 9mm Slide Lock Utility Knife is a fantastic little tool. It’s lightweight, easy to control, and the snap‑off blades stay sharp for a long time. The slide lock feels secure, so the blade doesn’t slip while cutting. Great for crafts, packaging, and detailed work. Simple, durable, and exactly what you want in a precision knife. If you’d like an even shorter or more energetic version, I can shape it however you like.

Is a great The size,The sharpness,very happy with it.

I tried this as a pocket knife replacement, at work there's copious amounts of tape and cardboard and cling wrap to cut, and outside work packages mostly, the odd string, paper and such, mail and the like; I've always had a pocket knife but grew tired of cleaning tape residue, and sharpening blades that I could never get razor sharp, and even when I got close they would dull and chip if dropped. With a slight mod to the clip (sanding down the inner nub, for easier sliding into the pocket), I can now do all the pocket knife tasks aside from stabbing one in self defense, yet slashing is still available, without having to constantly maintain and worry about dmaging or losing my knife. Not only are these so cheap you can buy 10 for the price of a decent knife, you can also easily snap off each blade that is dull, or chipped or covered in residue, providing a new sharp edge. I also own the ss version but like another review stated I enjoy this one better, feels better in the hand and also doesn't have any sharp metal edges that would scrape my hand when entring into my pocket. The construction on these are sound, nothing feels cheap or readily breakable, for the price of a pen you can have a cutting implement that will surpass your expectations.

My dad was a contractor who gave me my own tool box full of tools at age 14, saying "girls need to know how to fix their own stuff, if only to know if their contractor is cheating them", and in that box was my first Olfa knife, which I used until September 2023, when some unsavory contractors stole all my tools, so when I purchased this new Olfa knife, I was highly disappointed. This knife is slightly shorter, thinner, and physically lighter than the older knives, with less heft, are cheaply made, and feel somehow off, which gives me less confidence when using it, which leads to easily cutting oneself, which I have done for the first time in years. Make no mistake, these knives are equally as sharp, if not sharper, as the old ones were, but feel cheap. May I suggest you use the (yellow) Olfa 215B knife which, while made of a heavy duty plastic, has all of the attributes the metal knife has lost. If anything, the only issue I may have with the 215B is that none of its instructions are in English, which are only necessary because I refill them with Olfa blades.

This is a great tool! Easy to use, well made, snap-off blades are great!

My favourite brand and size of knife

Works like a charm.

Works as it should. I like the pocket clip as well

I have been using the same Olfa 9mm for over 20 years. Just bought 2 of these knives for other work stations in our business and it's nice to see Olfa's quality still remains the same. Tough, sturdy tools and I'll probably see another 20+ years out of these new ones too.

Great brand. Great knife. But use bigger one for boxes. Besides with an tabletop paper cutter i don't find I need it for anything rn. Although if I got back into charcoal drawing, especially reductive work, I would use this for sharpening mechanical eraser sticks.