POPLOCK Folding Utility Knife with K-Hook Blade & Notch Razor - Twin Blade Box Cutter, Dual Blade Retractable Razor Knife for Drywall, Roofing, Carpet - Heavy Duty Contractor Tool

These blades are working out pretty good for cutting out the sidewalls of waste tires.

Not as sharp as I was expecting... wears a bit faster also but for me micro blade knife keeping and will use

I work Ina warehouse an constantly need to cut wrap, tape, and cardboard, works great having 2 blades in case u have 2 different uses, it's a good tuff quality really sharp w great and easy , safety precaution, standard blade size , I've had it for about 1year an is holding up great

Great. Bought it for a different shape to separate them from the regular blades since I use these for food prep.

No tiene donde sugetar y es un materia muy barato

Pros: Its a really cool knife concept that lets you choose between two blades. It is also very very easy to swap blades. Just extend the blade out, press the two red buttons, then pull out the blade. Then press the buttons again and insert a new blade. Very fast and easy. Cons: 1. The blade chooser switch seems reversed. When you press the red tab to the left, the right blade comes out, and vice versa. I understand that you are "locking" the blade that comes out, but they should reverse it somehow. Also, do not move the blade selector while the blade is out. It takes a few tries of putting the blade in and out again for the locking mechanism to catch so you can select the proper blade. 2. Handle is plastic, while the head/blade holder is metal. This make the knife very top heavy. It just feels un-even when using. They need to make the handle metal, or heavier to even the weight distribution. 3. It needs a belt clip, plain and simple. Or at least have one that is removeable, so for the people that only put this in a bag, or in their pocket, they can remove it if they don't want it. I understand that a metal handle and a belt clip will increase the cost, but it will make it soo much better, and totally worth the money.

Awesome blades!

Received this knife yesterday. 1st impression was it the plastic handle was a bit cheesy. No extra blade storage. Wanted this knife so I didn’t have to carry two razor knives for roof shingles; 1 hooked blade and 1 straight. Worked well for the 1st couple of hours… then the straight blade wouldn’t extend. Ok, went and grabbed my single blade knife. So now I have one single blade knife and one hooked blade knife, defeating the purpose of having a two blade knife… about an hour later, the hooked blade and the straight blade won’t extend. Fiddled with it during lunch… no joy. My opinion, might be good for office and warehouse use. Doesn’t work for roofing. Most likely because of all the bits of shingle and tar that gum up the works. :(