WORKPRO Retractable Utility Knife

This is one of the best knives I've found. I only used this knife for lightweight projects. I still haven't been able to effectively test this knife's metal. On multiple levels and in multiple dimensions(not related to Hadden). I also ordered https://www.amazon.com/gp/product/B000NID9X4/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1 knowing that this knife comes with three extra blades. 1 was installed and ready for use and the other two were stored in reserve.That's where this knife sets itself apart from the other guys. It has a pocket, on the back end of the knife that slides up to accept about 5 extra blades. I unfortunately am used to the run of the mill knife. A few settings and a screw or lever to expose the knife's innards to access the extra blades. I wanted to feed it and was met with 4 tiny screws. I'm supposed to remove all those? No, too complicated. Hmm. What is this? No way! I love that. The Stanley blades did seem slightly better quality than the included blades. The pocket easily accepts extra blades and they fit snugly under a plastic tongue under pressure.Next up are the sliders. On my journey through this knife's functions I pushed the top-most lever forward and the blade auto-retracts. I push it out again... Let me take a moment to say that if the package had instructions I failed to read them. to see if I can lock it into place. Nope. Here's another button near its business end. Push that and push the top lever. Still retracts. So I push the side lever all the way forward. AHA! With the normal 3 length settings I am liking this knife more and more. To recap - Top slider for quick cuts. Side slider for longer jobs. A pocket in the back for quick blade replacements.That's where we are now. Remember that button I pressed thinking it might lock the blade? That button releases the blade. It not so easy though, and for that I am thankful. One would press that button in firmly, carefully grasp the blade by its top corner and slightly wiggle the blade as he or she pulls. Bingo. The blade's out. Reversing the process, releasing the lever and wiggling to make sure it locks is easy.It is also smaller and lighter than my other knife.I hope I remember to come back here after I have run this guy through its paces. It's thoughtfully designed and is comfortable to use, as least for short periods of time, so far.With its many features I do recommend this knife for the occasional jobs around the house. I haven't used it enough to recommend to the contractors/subcontractors and homeowners out there.For the price I recommend buying at least 1. 3 so you are prepared should anything happen to your knife. 6 if you have a helper. After that, he or she can fend for themselves.